-
Having trouble using the site?
Contact support
Tubb's bore lapping bullets
- Thread starter mnhntr
- Start date
Re: Tubb's bore lapping bullets
I used-em on my sh*tty model-1 sales barrel on my AR. Figure it's probably an ER Shaw barrel, anyway... made a big difference. it's a 1:10 twist 24" bull barrel... POS... barely shoots just under 1 MOA on a good day. It was shooting twice that before the Tubb polishing rounds so I would have to say it works.
knowing what I know now... I would have never bought my AR upper half where I did to begin with.
Saving the cash for a new bolt gun now but when that's done I WILL be getting a new barrel for my AR.
I may just chop the barrel off & just shoot 22LR out of it through the conversion kit.
I used-em on my sh*tty model-1 sales barrel on my AR. Figure it's probably an ER Shaw barrel, anyway... made a big difference. it's a 1:10 twist 24" bull barrel... POS... barely shoots just under 1 MOA on a good day. It was shooting twice that before the Tubb polishing rounds so I would have to say it works.
knowing what I know now... I would have never bought my AR upper half where I did to begin with.
Saving the cash for a new bolt gun now but when that's done I WILL be getting a new barrel for my AR.
I may just chop the barrel off & just shoot 22LR out of it through the conversion kit.
Re: Tubb's bore lapping bullets
Worked great on my Kimber that had a tight bore. It has a suppressor on it and would break the sound barrier even with sub-sonic ammo. Used the kit and you could watch the speed drop on the chrono as the bore was being lapped during the shooting process! Pretty amazing. The bore just gleams. Hope this helps. Paul.
Worked great on my Kimber that had a tight bore. It has a suppressor on it and would break the sound barrier even with sub-sonic ammo. Used the kit and you could watch the speed drop on the chrono as the bore was being lapped during the shooting process! Pretty amazing. The bore just gleams. Hope this helps. Paul.
Re: Tubb's bore lapping bullets
Man, I could never bring myself to shoot those through my new Krieger. I would suggest calling Krieger instead of the guy trying to sell you his bullets!
Man, I could never bring myself to shoot those through my new Krieger. I would suggest calling Krieger instead of the guy trying to sell you his bullets!
Re: Tubb's bore lapping bullets
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: dang472</div><div class="ubbcode-body">I would suggest calling Krieger instead of the guy trying to sell you his bullets! </div></div>
This^^
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: dang472</div><div class="ubbcode-body">I would suggest calling Krieger instead of the guy trying to sell you his bullets! </div></div>
This^^
Re: Tubb's bore lapping bullets
Tubb makes two different products. Final Finish which is meant for factory barrels and the Throat Maintenance System(TMS) which is meant to be used to keep the throat polished and extend barrel life. Both work for their intended purpose. Here's a little write up I did on them.
Link dead
Tubb makes two different products. Final Finish which is meant for factory barrels and the Throat Maintenance System(TMS) which is meant to be used to keep the throat polished and extend barrel life. Both work for their intended purpose. Here's a little write up I did on them.
Link dead
Re: Tubb's bore lapping bullets
If you have a factory barrel that won't shoot, the Tubbs Final Finish system might help you out. They made a world of difference on several Remington 700 LTR's and at least one Remington 700 PSS that I've shot. But on a brand new kreiger? First follow Kreiger's barrel break in procedure and then if you are still having problems call Kreiger tech support. There's no reset button on a barrel. Messing up a kreiger is a very expensive lesson to learn.
If you have a factory barrel that won't shoot, the Tubbs Final Finish system might help you out. They made a world of difference on several Remington 700 LTR's and at least one Remington 700 PSS that I've shot. But on a brand new kreiger? First follow Kreiger's barrel break in procedure and then if you are still having problems call Kreiger tech support. There's no reset button on a barrel. Messing up a kreiger is a very expensive lesson to learn.
Re: Tubb's bore lapping bullets
I know Rob01 likes these and I'm sure he has a lot of good experience. But I have to say I really don't think running something through your bore that is intended to be more abrasive than regular projectiles is a great idea. At least not on a barrel that is supposed to be of a high quality like a Krieger. I have to believe you're shortening the barrel life by hundreds of rounds. Maybe even over a thousand depending on the caliber. It's not worth it to me. If a Krieger barrel won't shoot, it needs to be taken up with Krieger. IMO...
I know Rob01 likes these and I'm sure he has a lot of good experience. But I have to say I really don't think running something through your bore that is intended to be more abrasive than regular projectiles is a great idea. At least not on a barrel that is supposed to be of a high quality like a Krieger. I have to believe you're shortening the barrel life by hundreds of rounds. Maybe even over a thousand depending on the caliber. It's not worth it to me. If a Krieger barrel won't shoot, it needs to be taken up with Krieger. IMO...
Re: Tubb's bore lapping bullets
The TMS rounds that would be used in a custom barrel have a finer grit on them than that used to hand lap the barrel. The TMS rounds aren't meant to make the custom barrel shoot better by doing anything to the bore but to keep the the throat smooth. From the Krieger site on Barrel Break In:
"Because the lay of the finish is in the direction of the bullet travel, very little is done to the bore during break-in, but the throat is another story. When your barrel is chambered, by necessity there are reamer marks left in the throat that are across the lands, i.e. across the direction of the bullet travel. In a new barrel they are very distinct; much like the teeth on a very fine file. When the bullet is forced into the throat, copper dust is removed from the jacket material and released into the gas which at this temperature and pressure is actually a plasma. The copper dust is vaporized in this plasma and is carried down the barrel. As the gas expands and cools, the copper comes out of suspension and is deposited in the bore. This makes it appear as if the source of the fouling is the bore when it is actually for the most part the new throat. If this copper is allowed to stay in the bore, and subsequent bullets and deposits are fired over it, copper which adheres well to itself, will build up quickly and may be difficult to remove later. <span style="font-weight: bold">So when we break in a barrel, our goal is to get the throat “polished” without allowing copper to build up in the bore. This is the reasoning for the "fire-one-shot-and-clean" procedure</span>."
The Tubb TMS round break in of 3 TMS rounds, clean and then 3 TMS rounds does what the one shot/clean method described above but quicker and more likely better as it has a very fine grit lapping compound on it which naked bullets don't.
As I said in the write up above, I used the TMS rounds as directed in a Schneider(.243) and Bartlein(300WM) barrel. The .243 was at over 1800 rounds when I sold it and still a half minute rifle so I don't think it cut anything off the barrel life.
Use them or don't as it's your barrel but there's alot of concern about them that's really unfounded in my experience with them.
The TMS rounds that would be used in a custom barrel have a finer grit on them than that used to hand lap the barrel. The TMS rounds aren't meant to make the custom barrel shoot better by doing anything to the bore but to keep the the throat smooth. From the Krieger site on Barrel Break In:
"Because the lay of the finish is in the direction of the bullet travel, very little is done to the bore during break-in, but the throat is another story. When your barrel is chambered, by necessity there are reamer marks left in the throat that are across the lands, i.e. across the direction of the bullet travel. In a new barrel they are very distinct; much like the teeth on a very fine file. When the bullet is forced into the throat, copper dust is removed from the jacket material and released into the gas which at this temperature and pressure is actually a plasma. The copper dust is vaporized in this plasma and is carried down the barrel. As the gas expands and cools, the copper comes out of suspension and is deposited in the bore. This makes it appear as if the source of the fouling is the bore when it is actually for the most part the new throat. If this copper is allowed to stay in the bore, and subsequent bullets and deposits are fired over it, copper which adheres well to itself, will build up quickly and may be difficult to remove later. <span style="font-weight: bold">So when we break in a barrel, our goal is to get the throat “polished” without allowing copper to build up in the bore. This is the reasoning for the "fire-one-shot-and-clean" procedure</span>."
The Tubb TMS round break in of 3 TMS rounds, clean and then 3 TMS rounds does what the one shot/clean method described above but quicker and more likely better as it has a very fine grit lapping compound on it which naked bullets don't.
As I said in the write up above, I used the TMS rounds as directed in a Schneider(.243) and Bartlein(300WM) barrel. The .243 was at over 1800 rounds when I sold it and still a half minute rifle so I don't think it cut anything off the barrel life.
Use them or don't as it's your barrel but there's alot of concern about them that's really unfounded in my experience with them.
Re: Tubb's bore lapping bullets
I know some guys use it etc.....and like it etc....
As the maker of the barrels I have to say that if you use one of these kits in our barrel, it's your barrel. We will not warranty how the barrel shoots afterwards or fouls etc.... Why don't we put a warranty on it? We have no control over what the end user is doing to it etc...
I won't get into super detail but I know for a fact two years ago that company x and shooters so and so went and fire lapped one of our .338 Lapua barrels. The gun was shooting around 1/3 moa with box ammo at all distances. One of the shooters fire lapped it and after doing it the gun/barrel flat out quit shooting and also had copper fouling problems etc...and the barrel only had around 600 rounds on it.
I don't know how many rounds where fire lapped/shot thru it and the compound grit etc.....again we had no control over what was being done. The end user did confirm that they did fire lapped it. That's why we give no warranty on things like this.
Later, Frank
Bartlein Barrels
I know some guys use it etc.....and like it etc....
As the maker of the barrels I have to say that if you use one of these kits in our barrel, it's your barrel. We will not warranty how the barrel shoots afterwards or fouls etc.... Why don't we put a warranty on it? We have no control over what the end user is doing to it etc...
I won't get into super detail but I know for a fact two years ago that company x and shooters so and so went and fire lapped one of our .338 Lapua barrels. The gun was shooting around 1/3 moa with box ammo at all distances. One of the shooters fire lapped it and after doing it the gun/barrel flat out quit shooting and also had copper fouling problems etc...and the barrel only had around 600 rounds on it.
I don't know how many rounds where fire lapped/shot thru it and the compound grit etc.....again we had no control over what was being done. The end user did confirm that they did fire lapped it. That's why we give no warranty on things like this.
Later, Frank
Bartlein Barrels
Re: Tubb's bore lapping bullets
Fire lapping a barrel that was shooting 1/3 MOA? Sounds like the fat guy who sues the all-you-can-eat buffet for "making" him fat. Just all day long wrong!
Fire lapping a barrel that was shooting 1/3 MOA? Sounds like the fat guy who sues the all-you-can-eat buffet for "making" him fat. Just all day long wrong!
Re: Tubb's bore lapping bullets
They did send the barrel back to us for us to inspect and to see if we could save it. We couldn't save it but tried.
Later, Frank
Bartlein Barrels
They did send the barrel back to us for us to inspect and to see if we could save it. We couldn't save it but tried.
Later, Frank
Bartlein Barrels
Re: Tubb's bore lapping bullets
Frank as a maker of barrels, what would be your expert opinion on this subject? Just shoot the barrel until she smooth’s out? Send it out to be hand lapped, if you possess the knowhow do it yourself? Do the recommended break in procedure and live with the results?
just curious
thanks in advance
Frank as a maker of barrels, what would be your expert opinion on this subject? Just shoot the barrel until she smooth’s out? Send it out to be hand lapped, if you possess the knowhow do it yourself? Do the recommended break in procedure and live with the results?
just curious
thanks in advance
Re: Tubb's bore lapping bullets
If you're buying a Bartlein barrel they are already lapped and no need to do anything to the bore.
http://www.bartleinbarrels.com/whoarewe.htm
Bartlein also lists their Break in/Cleaning info on their site
http://www.bartleinbarrels.com/BreakInCleaning.htm
If you're buying a Bartlein barrel they are already lapped and no need to do anything to the bore.
http://www.bartleinbarrels.com/whoarewe.htm
Bartlein also lists their Break in/Cleaning info on their site
http://www.bartleinbarrels.com/BreakInCleaning.htm
Re: Tubb's bore lapping bullets
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: oosickness</div><div class="ubbcode-body">Frank as a maker of barrels, what would be your expert opinion on this subject? Just shoot the barrel until she smooth’s out? Send it out to be hand lapped, if you possess the knowhow do it yourself? Do the recommended break in procedure and live with the results?
just curious
thanks in advance </div></div>
In my opinion? In the case of getting one of our barrels again I don't recommend doing it. When shooting/breaking in a new barrel the only part your really breaking in is the new throat of the chamber. For the most part I really don't do any type of a breakin anymore. I might shoot the first couple of rounds thru the barrel and clean after each one to see what the barrel is telling me. After that I might shoot say 10-20 rounds and then clean it. Last gun built was built by GAP. Badger Ordance action in .308win. I shot 20 rounds thru it and cleaned it afterwards. It shot like a million bucks and cleaned easily. As far as I'm concerend it's broken in.
If your talking more about a factory barrel or lower end quality barrel and the barrel is rougher and it's fouling bad and the accuracy is going sour after say 15 rounds and you don't have the $$$$ to spend for a new stick/rebuild then I say you've got nothing to lose.
The only other time I would consider it on my personal barrels is if the gun/barrel has alot of rounds on it and is coming to the end of it's life and say I've got a couple of matches to try and get thru for the year. Then I would consider it. As the barrel starts to get a lot of rounds on it the throat is getting rougher etc....using the final finish or something like JB bore compound etc....to smooth out the throat etc...would probably help.
I know some guys like Rob etc....use it and like using it. In they're cases they've done it and know what they are doing and are not wrecking anything etc.....
What is hard for us as the barrel maker and not endorsing it etc...is we have no control over how a person does it and to what level/extreme they do it. Not done correctly or over done I say it will wreck barrels.
Later, Frank
Bartlein Barrels
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: oosickness</div><div class="ubbcode-body">Frank as a maker of barrels, what would be your expert opinion on this subject? Just shoot the barrel until she smooth’s out? Send it out to be hand lapped, if you possess the knowhow do it yourself? Do the recommended break in procedure and live with the results?
just curious
thanks in advance </div></div>
In my opinion? In the case of getting one of our barrels again I don't recommend doing it. When shooting/breaking in a new barrel the only part your really breaking in is the new throat of the chamber. For the most part I really don't do any type of a breakin anymore. I might shoot the first couple of rounds thru the barrel and clean after each one to see what the barrel is telling me. After that I might shoot say 10-20 rounds and then clean it. Last gun built was built by GAP. Badger Ordance action in .308win. I shot 20 rounds thru it and cleaned it afterwards. It shot like a million bucks and cleaned easily. As far as I'm concerend it's broken in.
If your talking more about a factory barrel or lower end quality barrel and the barrel is rougher and it's fouling bad and the accuracy is going sour after say 15 rounds and you don't have the $$$$ to spend for a new stick/rebuild then I say you've got nothing to lose.
The only other time I would consider it on my personal barrels is if the gun/barrel has alot of rounds on it and is coming to the end of it's life and say I've got a couple of matches to try and get thru for the year. Then I would consider it. As the barrel starts to get a lot of rounds on it the throat is getting rougher etc....using the final finish or something like JB bore compound etc....to smooth out the throat etc...would probably help.
I know some guys like Rob etc....use it and like using it. In they're cases they've done it and know what they are doing and are not wrecking anything etc.....
What is hard for us as the barrel maker and not endorsing it etc...is we have no control over how a person does it and to what level/extreme they do it. Not done correctly or over done I say it will wreck barrels.
Later, Frank
Bartlein Barrels
Re: Tubb's bore lapping bullets
Thinking about this some more. I have a pre64 Winchester Target in .30-06. The barrel is in nice shape (approx. 2500 rounds on it) but is rougher than a corn cob! First 5 rounds thru the gun it will shoot right around 5/8" moa at a 100 yards, but after that the group goes sour to the tune of 1" high x 3.5" wide.
Why is the group going sour. The barrel is fouling like you wouldn't believe. I've got a new barrel in the works here at the shop to replace it (I'll still keep the old barrel so it stays with the gun etc....) but before I pull it off maybe I'll pick up a kit and fire lap it to see if it helps and I will monitor wear before hand and after and how the barrel shoots afterwards etc.....as far as I'm concerned nothing to lose on the factory barrel as it's not shooting anyways.
Later, Frank
Bartlein Barrels
Thinking about this some more. I have a pre64 Winchester Target in .30-06. The barrel is in nice shape (approx. 2500 rounds on it) but is rougher than a corn cob! First 5 rounds thru the gun it will shoot right around 5/8" moa at a 100 yards, but after that the group goes sour to the tune of 1" high x 3.5" wide.
Why is the group going sour. The barrel is fouling like you wouldn't believe. I've got a new barrel in the works here at the shop to replace it (I'll still keep the old barrel so it stays with the gun etc....) but before I pull it off maybe I'll pick up a kit and fire lap it to see if it helps and I will monitor wear before hand and after and how the barrel shoots afterwards etc.....as far as I'm concerned nothing to lose on the factory barrel as it's not shooting anyways.
Later, Frank
Bartlein Barrels
Re: Tubb's bore lapping bullets
Given your line of work, I would be very interested in your opinion of the product once you try it.
Given your line of work, I would be very interested in your opinion of the product once you try it.
Re: Tubb's bore lapping bullets
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: dang472</div><div class="ubbcode-body">Man, I could never bring myself to shoot those through my new Krieger. I would suggest calling Krieger instead of the guy trying to sell you his bullets! </div></div>
I wouldn't run it through my Kreiger. I am sure the stuff works, but with my luck, not in my Krieger barrel. I would do it in a factory.
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: dang472</div><div class="ubbcode-body">Man, I could never bring myself to shoot those through my new Krieger. I would suggest calling Krieger instead of the guy trying to sell you his bullets! </div></div>
I wouldn't run it through my Kreiger. I am sure the stuff works, but with my luck, not in my Krieger barrel. I would do it in a factory.
Re: Tubb's bore lapping bullets
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: will67</div><div class="ubbcode-body">Given your line of work, I would be very interested in your opinion of the product once you try it. </div></div>
Got some coming from D.Tubb. He was kinda enough to send some for me to try.
Will let you know when we get around to doing it. Probably get the bullets late this week or early next. I'll load them up and get the gun ready etc...Will be at least two weeks before I shoot'em though. Having eye surgery on Friday so I won't be shooting any guns for a couple of weeks.
Later, Frank
Bartlein Barrels
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: will67</div><div class="ubbcode-body">Given your line of work, I would be very interested in your opinion of the product once you try it. </div></div>
Got some coming from D.Tubb. He was kinda enough to send some for me to try.
Will let you know when we get around to doing it. Probably get the bullets late this week or early next. I'll load them up and get the gun ready etc...Will be at least two weeks before I shoot'em though. Having eye surgery on Friday so I won't be shooting any guns for a couple of weeks.
Later, Frank
Bartlein Barrels
Re: Tubb's bore lapping bullets
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: mnhntr</div><div class="ubbcode-body">I have a factory Savage LRP and it shoots decent but I just saw this and thought it might make it better.</div></div>
factory savage barrels are rough... they still shoot great, but still rough...
the kit has 1 2 3 4 5 sets of grit... on a savage i only use 1 2 3 per instruction on his site... 4 and 5 or for shitty old barrels...
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: mnhntr</div><div class="ubbcode-body">I have a factory Savage LRP and it shoots decent but I just saw this and thought it might make it better.</div></div>
factory savage barrels are rough... they still shoot great, but still rough...
the kit has 1 2 3 4 5 sets of grit... on a savage i only use 1 2 3 per instruction on his site... 4 and 5 or for shitty old barrels...
Re: Tubb's bore lapping bullets
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Frank Green</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: will67</div><div class="ubbcode-body">Given your line of work, I would be very interested in your opinion of the product once you try it. </div></div>
Got some coming from D.Tubb. He was kinda enough to send some for me to try.
Will let you know when we get around to doing it. Probably get the bullets late this week or early next. I'll load them up and get the gun ready etc...Will be at least two weeks before I shoot'em though. Having eye surgery on Friday so I won't be shooting any guns for a couple of weeks.
Later, Frank
Bartlein Barrels</div></div>
any updates?
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Frank Green</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: will67</div><div class="ubbcode-body">Given your line of work, I would be very interested in your opinion of the product once you try it. </div></div>
Got some coming from D.Tubb. He was kinda enough to send some for me to try.
Will let you know when we get around to doing it. Probably get the bullets late this week or early next. I'll load them up and get the gun ready etc...Will be at least two weeks before I shoot'em though. Having eye surgery on Friday so I won't be shooting any guns for a couple of weeks.
Later, Frank
Bartlein Barrels</div></div>
any updates?
Re: Tubb's bore lapping bullets
I have used it on a couple of barrels that were not shooting up to what they should and fouled badly. Both quit fouling and one shot better, one did not. I do not blame that on the system, some barrels are just not going to shoot.
I have found the chrome molly barrels of one great maker are running uniformly bad now. It the past they shot great. Now they are rough and fowl so fast that you cannot even get through a 5 shot group. Thier SS barrels are still great.
David is a businessman. He would not sell anything that would now work as he says it will. He has enought expirence to know what will work as well.
I have used it on a couple of barrels that were not shooting up to what they should and fouled badly. Both quit fouling and one shot better, one did not. I do not blame that on the system, some barrels are just not going to shoot.
I have found the chrome molly barrels of one great maker are running uniformly bad now. It the past they shot great. Now they are rough and fowl so fast that you cannot even get through a 5 shot group. Thier SS barrels are still great.
David is a businessman. He would not sell anything that would now work as he says it will. He has enought expirence to know what will work as well.
Re: Tubb's bore lapping bullets
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Ring</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Frank Green</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: will67</div><div class="ubbcode-body">Given your line of work, I would be very interested in your opinion of the product once you try it. </div></div>
Got some coming from D.Tubb. He was kinda enough to send some for me to try.
Will let you know when we get around to doing it. Probably get the bullets late this week or early next. I'll load them up and get the gun ready etc...Will be at least two weeks before I shoot'em though. Having eye surgery on Friday so I won't be shooting any guns for a couple of weeks.
Later, Frank
Bartlein Barrels</div></div>
any updates? </div></div>
I've got them shot thru the gun I'm testing it on. Maybe next week or a couple of weeks after gonna give the gun a whirl again and will post the results.
later, Frank
Bartlein Barrels
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Ring</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Frank Green</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: will67</div><div class="ubbcode-body">Given your line of work, I would be very interested in your opinion of the product once you try it. </div></div>
Got some coming from D.Tubb. He was kinda enough to send some for me to try.
Will let you know when we get around to doing it. Probably get the bullets late this week or early next. I'll load them up and get the gun ready etc...Will be at least two weeks before I shoot'em though. Having eye surgery on Friday so I won't be shooting any guns for a couple of weeks.
Later, Frank
Bartlein Barrels</div></div>
any updates? </div></div>
I've got them shot thru the gun I'm testing it on. Maybe next week or a couple of weeks after gonna give the gun a whirl again and will post the results.
later, Frank
Bartlein Barrels
Re: Tubb's bore lapping bullets
I had a brand new rem700 in .308 that wouldn't shoot under 1.75" at 100 no matter what I tried (FGMM, various handloads, different stocks, different shooters, etc).
I figured I had nothing to lose to I tried the lapping bullets. No effect that I could determine, neither the group size nor the zero changed. I didn't chrono after, just thought of doing that now but that barrel is long gone. Cleaning seemed the same too, and it still took a few shots through a clean bore to get it to group to the 1.5"... the first few out of a clean barrel before and after treatment was still 3"+.
I had a brand new rem700 in .308 that wouldn't shoot under 1.75" at 100 no matter what I tried (FGMM, various handloads, different stocks, different shooters, etc).
I figured I had nothing to lose to I tried the lapping bullets. No effect that I could determine, neither the group size nor the zero changed. I didn't chrono after, just thought of doing that now but that barrel is long gone. Cleaning seemed the same too, and it still took a few shots through a clean bore to get it to group to the 1.5"... the first few out of a clean barrel before and after treatment was still 3"+.
Re: Tubb's bore lapping bullets
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: rth1800</div><div class="ubbcode-body">Jayne,
What you say makes me wonder if your bore was too large? This would cause exactly what you are indicating.
</div></div>
I did have it checked out by a local gunsmith to see if something was really wrong with the chamber sizing or headspace or whatever so I could potentially send it back to Remington and say WTF since I bought it brand new. Nothing was so out of spec to warrant that unfortunately.
GAP didn't say anything when they ripped the barrel off it to re-do, but I doubt they check the outgoing factory parts (why would they?).
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: rth1800</div><div class="ubbcode-body">Jayne,
What you say makes me wonder if your bore was too large? This would cause exactly what you are indicating.
</div></div>
I did have it checked out by a local gunsmith to see if something was really wrong with the chamber sizing or headspace or whatever so I could potentially send it back to Remington and say WTF since I bought it brand new. Nothing was so out of spec to warrant that unfortunately.
GAP didn't say anything when they ripped the barrel off it to re-do, but I doubt they check the outgoing factory parts (why would they?).
Re: Tubb's bore lapping bullets
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Rob01</div><div class="ubbcode-body">Jayne you use TMS or Final Finish? If Finial Finish how many of each and how many of the grit levels did you use? </div></div>
Final finish, total of 10 of each #1 through #5 per the instructions. Loaded them on the low side but I didn't actually chrono them when I fired them (it recommends something like 2200 fps for the loads).
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Rob01</div><div class="ubbcode-body">Jayne you use TMS or Final Finish? If Finial Finish how many of each and how many of the grit levels did you use? </div></div>
Final finish, total of 10 of each #1 through #5 per the instructions. Loaded them on the low side but I didn't actually chrono them when I fired them (it recommends something like 2200 fps for the loads).
All I can say is that I have waited over 8 years to see some feedback from Mr Green. I can only assume his results were positive .
Plenty of barrel installers are now polishing the lead/throat in various ways.
Keep in mind that once you have surface cracking in your barrel's throat the accuracy will slowly decline.. a few TMS bullets on a periodic basis will go along way in maintaining the accuracy of your worn investment. Kind of like changing the oil in your truck.
Plenty of barrel installers are now polishing the lead/throat in various ways.
Keep in mind that once you have surface cracking in your barrel's throat the accuracy will slowly decline.. a few TMS bullets on a periodic basis will go along way in maintaining the accuracy of your worn investment. Kind of like changing the oil in your truck.
