I'm working on a .308 with a 20" barrel. I was wanting a 1 in 10 twist, but was wondering if it offers any real advantage over the 1 in 12 for the heavier bullets. I can get a what in 1 in 12 easy and cheep. It's possible I might mess with subsonic loads just cause it sounds like fun, so I might be going heavier. Should I hold out for the 1 in 10?
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1 in 10 vs. 1 in 12 for .308
- Thread starter ccombs
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Re: 1 in 10 vs. 1 in 12 for .308
FWIW I am having great results with 180 gn subsonic in a stock 1-12 remington sps barrel.
FWIW I am having great results with 180 gn subsonic in a stock 1-12 remington sps barrel.
Re: 1 in 10 vs. 1 in 12 for .308
Here's the deal. Been wanting a .308 with a 20" for a while. happened into a great deal on an unfired Remington SPS varmint in .308 with the 26" barrel and grabbed it a little hastily. A guy I know has a shilen 20" barrel he will sell me for $40, but it is in 1 in 12. Torn between just grabbing the barrel and having it put on, and selling the rifle and getting a Remington SPS Tactical AAC.
Here's the deal. Been wanting a .308 with a 20" for a while. happened into a great deal on an unfired Remington SPS varmint in .308 with the 26" barrel and grabbed it a little hastily. A guy I know has a shilen 20" barrel he will sell me for $40, but it is in 1 in 12. Torn between just grabbing the barrel and having it put on, and selling the rifle and getting a Remington SPS Tactical AAC.
Re: 1 in 10 vs. 1 in 12 for .308
There is a reason he is selling the 20" 1/12!! You need to go with a 1/10 to keep your muzzle velocity up, you can cut the 26" down to 22" and still be ok.
It is not that your accuracy will suffer but with your slower muzzle velocity the wind will play hell on you past 6-700yds.
There is a reason he is selling the 20" 1/12!! You need to go with a 1/10 to keep your muzzle velocity up, you can cut the 26" down to 22" and still be ok.
It is not that your accuracy will suffer but with your slower muzzle velocity the wind will play hell on you past 6-700yds.
Re: 1 in 10 vs. 1 in 12 for .308
KPK, you might have an idea! Never thought about it that way. Not much of a gun dealer. The guy says it's a shooter, he just doesn't have a rifle to put it on and messing with his ARs right now. I know him and trust him on this.
KPK, you might have an idea! Never thought about it that way. Not much of a gun dealer. The guy says it's a shooter, he just doesn't have a rifle to put it on and messing with his ARs right now. I know him and trust him on this.
Re: 1 in 10 vs. 1 in 12 for .308
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Apophas</div><div class="ubbcode-body">Wait for 1 in 10.... unless you are ok with only using 168gn Bullets... If you want heavier like 175 then go with 1 in 10. </div></div>
i dunno about that,my 1:12 shoots 3/4moa or better with 175smks, but anything heavier than that is a waste of bullets.
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Apophas</div><div class="ubbcode-body">Wait for 1 in 10.... unless you are ok with only using 168gn Bullets... If you want heavier like 175 then go with 1 in 10. </div></div>
i dunno about that,my 1:12 shoots 3/4moa or better with 175smks, but anything heavier than that is a waste of bullets.
Re: 1 in 10 vs. 1 in 12 for .308
I would go with a 1-10. I do have 2 1-12 20" 308s and they both shoot 168 and 175s just fine. Both are under.75 moa. I only wish I had the 1-10 so I could shoot 155s. Niether will shoot 155 to save their lives.
I would go with a 1-10. I do have 2 1-12 20" 308s and they both shoot 168 and 175s just fine. Both are under.75 moa. I only wish I had the 1-10 so I could shoot 155s. Niether will shoot 155 to save their lives.
Re: 1 in 10 vs. 1 in 12 for .308
Are you only constrained into getting either/or? How about a 1:11.25. That seems like the twist of choice for a lot of custom barrels. Perhaps that's a great compromise between the 10 and 12 twist choices.
Are you only constrained into getting either/or? How about a 1:11.25. That seems like the twist of choice for a lot of custom barrels. Perhaps that's a great compromise between the 10 and 12 twist choices.
Re: 1 in 10 vs. 1 in 12 for .308
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Emilio</div><div class="ubbcode-body">I would go with a 1-10. I do have 2 1-12 20" 308s and they both shoot 168 and 175s just fine. Both are under.75 moa. I only wish I had the 1-10 so I could shoot 155s. Niether will shoot 155 to save their lives. </div></div>
I'm curious why the 155's don't shoot well in a slower twist as opposed to the faster twist. I thought it would be the other way around. Does the higher velocity have anything to do with it?
Flyingbullseye
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Emilio</div><div class="ubbcode-body">I would go with a 1-10. I do have 2 1-12 20" 308s and they both shoot 168 and 175s just fine. Both are under.75 moa. I only wish I had the 1-10 so I could shoot 155s. Niether will shoot 155 to save their lives. </div></div>
I'm curious why the 155's don't shoot well in a slower twist as opposed to the faster twist. I thought it would be the other way around. Does the higher velocity have anything to do with it?
Flyingbullseye
Re: 1 in 10 vs. 1 in 12 for .308
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Flyingbullseye</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Emilio</div><div class="ubbcode-body">I would go with a 1-10. I do have 2 1-12 20" 308s and they both shoot 168 and 175s just fine. Both are under.75 moa. I only wish I had the 1-10 so I could shoot 155s. Niether will shoot 155 to save their lives. </div></div>
I'm curious why the 155's don't shoot well in a slower twist as opposed to the faster twist. I thought it would be the other way around. Does the higher velocity have anything to do with it?
Flyingbullseye </div></div>
That's what I had thought as well. Perhaps some more load development is in order?
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Flyingbullseye</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Emilio</div><div class="ubbcode-body">I would go with a 1-10. I do have 2 1-12 20" 308s and they both shoot 168 and 175s just fine. Both are under.75 moa. I only wish I had the 1-10 so I could shoot 155s. Niether will shoot 155 to save their lives. </div></div>
I'm curious why the 155's don't shoot well in a slower twist as opposed to the faster twist. I thought it would be the other way around. Does the higher velocity have anything to do with it?
Flyingbullseye </div></div>
That's what I had thought as well. Perhaps some more load development is in order?
Re: 1 in 10 vs. 1 in 12 for .308
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Hogstooth</div><div class="ubbcode-body">There is a reason he is selling the 20" 1/12!! You need to go with a 1/10 to keep your muzzle velocity up, you can cut the 26" down to 22" and still be ok.
It is not that your accuracy will suffer but with your slower muzzle velocity the wind will play hell on you past 6-700yds. </div></div>
If anything the 1-10 is slower! Faster twist = Slower MV!
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Hogstooth</div><div class="ubbcode-body">There is a reason he is selling the 20" 1/12!! You need to go with a 1/10 to keep your muzzle velocity up, you can cut the 26" down to 22" and still be ok.
It is not that your accuracy will suffer but with your slower muzzle velocity the wind will play hell on you past 6-700yds. </div></div>
If anything the 1-10 is slower! Faster twist = Slower MV!
Re: 1 in 10 vs. 1 in 12 for .308
If your really interested in the subsonic's don't go with anything slower that the 1-10. Since you may be ordering a barrel look for one that has a 1-8 twist. Any of them should work nicely with supersonic ammo, but the faster twist rate really helps when your working with the heavier subsonic stuff.
If your really interested in the subsonic's don't go with anything slower that the 1-10. Since you may be ordering a barrel look for one that has a 1-8 twist. Any of them should work nicely with supersonic ammo, but the faster twist rate really helps when your working with the heavier subsonic stuff.
Re: 1 in 10 vs. 1 in 12 for .308
im having this problem. i am left handed and the 700 only comes in .308 left handed 1-12. so, now i need advice on what barrel brand to get that is 1-10.
im having this problem. i am left handed and the 700 only comes in .308 left handed 1-12. so, now i need advice on what barrel brand to get that is 1-10.
Re: 1 in 10 vs. 1 in 12 for .308
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Clint Combs</div><div class="ubbcode-body">Here's the deal. Been wanting a .308 with a 20" for a while. happened into a great deal on an unfired Remington SPS varmint in .308 with the 26" barrel and grabbed it a little hastily. A guy I know has a shilen 20" barrel he will sell me for $40, but it is in 1 in 12. Torn between just grabbing the barrel and having it put on, and selling the rifle and getting a Remington SPS Tactical AAC. </div></div>
GET OFF THE INTERNET AND SHOOT THE RIFLE.
The 1:12 will shoot anything you can magazine load just fine. My suggestion is to sell the Shilen. Put a proper stock on the SPS-V and shoot it.
Many of us have shot 208 Amax rounds from 1:12 barrels. Are you planning on shooting anything heavier than that?
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Clint Combs</div><div class="ubbcode-body">Here's the deal. Been wanting a .308 with a 20" for a while. happened into a great deal on an unfired Remington SPS varmint in .308 with the 26" barrel and grabbed it a little hastily. A guy I know has a shilen 20" barrel he will sell me for $40, but it is in 1 in 12. Torn between just grabbing the barrel and having it put on, and selling the rifle and getting a Remington SPS Tactical AAC. </div></div>
GET OFF THE INTERNET AND SHOOT THE RIFLE.
The 1:12 will shoot anything you can magazine load just fine. My suggestion is to sell the Shilen. Put a proper stock on the SPS-V and shoot it.
Many of us have shot 208 Amax rounds from 1:12 barrels. Are you planning on shooting anything heavier than that?
Re: 1 in 10 vs. 1 in 12 for .308
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Flyingbullseye</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Emilio</div><div class="ubbcode-body">I would go with a 1-10. I do have 2 1-12 20" 308s and they both shoot 168 and 175s just fine. Both are under.75 moa. I only wish I had the 1-10 so I could shoot 155s. Niether will shoot 155 to save their lives. </div></div>
I'm curious why the 155's don't shoot well in a slower twist as opposed to the faster twist. I thought it would be the other way around. Does the higher velocity have anything to do with it?
Flyingbullseye </div></div>
I tried all kinds of powder and a few types of 155 bullets and I couldn't get them to shoot out of my rifle. So I just started shooting 175 and 178s and they work great.
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Flyingbullseye</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Emilio</div><div class="ubbcode-body">I would go with a 1-10. I do have 2 1-12 20" 308s and they both shoot 168 and 175s just fine. Both are under.75 moa. I only wish I had the 1-10 so I could shoot 155s. Niether will shoot 155 to save their lives. </div></div>
I'm curious why the 155's don't shoot well in a slower twist as opposed to the faster twist. I thought it would be the other way around. Does the higher velocity have anything to do with it?
Flyingbullseye </div></div>
I tried all kinds of powder and a few types of 155 bullets and I couldn't get them to shoot out of my rifle. So I just started shooting 175 and 178s and they work great.
Re: 1 in 10 vs. 1 in 12 for .308
1/10 is your friend.
155's
175's
220 subsonics
shorter barrel and faster twist...i like the 175's
1/10 is your friend.
155's
175's
220 subsonics
shorter barrel and faster twist...i like the 175's
Re: 1 in 10 vs. 1 in 12 for .308
I was in sorta the same boat as you, not being sure what to do or get. I was in the position of needing something quick. I wanted a Krieger barrel, but would have to wait six months for a 1:10 twist stainless barrel. They had a 1:12 twist CM barrel in stock that I could have in three days. I got the 1:12 CM barrel.
Shooting 175gr SMKs during load development at 100 yards, it (the 1:12 barrel) is averaging .4" three shot groups over the course of 30 groups using ten different loads. I've even pulled a couple of .2s and one .05" group.
I don't think that you'll have a problem with shooting 175s out of a 1:12 twist. In any case, there's nothing wrong with a Shillen barrel and if you can get it for $40 and it's already cut and chambered, it's a no brainer to me. Get the Shillen and shoot it until it won't shoot anymore. Then get a new barrel.
I was in sorta the same boat as you, not being sure what to do or get. I was in the position of needing something quick. I wanted a Krieger barrel, but would have to wait six months for a 1:10 twist stainless barrel. They had a 1:12 twist CM barrel in stock that I could have in three days. I got the 1:12 CM barrel.
Shooting 175gr SMKs during load development at 100 yards, it (the 1:12 barrel) is averaging .4" three shot groups over the course of 30 groups using ten different loads. I've even pulled a couple of .2s and one .05" group.
I don't think that you'll have a problem with shooting 175s out of a 1:12 twist. In any case, there's nothing wrong with a Shillen barrel and if you can get it for $40 and it's already cut and chambered, it's a no brainer to me. Get the Shillen and shoot it until it won't shoot anymore. Then get a new barrel.
Re: 1 in 10 vs. 1 in 12 for .308
1:10 but not that barrel as I'd like to know why he's selling it.
I've got 1:12's and they shoot 175SMK's very accuarately however I'd not run it with a can and shoot subsonics on it. I want to be doubly sure that they will stabilize (yes - it's probably overkill but think about how a baffle strike would screw things up big time).
Any of my .308's that are 12 twist when it comes time to rebarrel any of them I'm going with a Chanlynn 10 twist. All of my Chanlynn 10 twists shoot lights out (and if I want to keep threading barrels in the future I will be confident that they will stabilize any subsonic load I settle on).
1:10 but not that barrel as I'd like to know why he's selling it.
I've got 1:12's and they shoot 175SMK's very accuarately however I'd not run it with a can and shoot subsonics on it. I want to be doubly sure that they will stabilize (yes - it's probably overkill but think about how a baffle strike would screw things up big time).
Any of my .308's that are 12 twist when it comes time to rebarrel any of them I'm going with a Chanlynn 10 twist. All of my Chanlynn 10 twists shoot lights out (and if I want to keep threading barrels in the future I will be confident that they will stabilize any subsonic load I settle on).
Re: 1 in 10 vs. 1 in 12 for .308
Wow, 26 posts on barrel twist for the 308. As Lonewolf, says above you have bought the rifle, go shoot it, work up loads for it, have fun with it. If later you don't like the lenght cut it back, $40 for a 20 inch Shilen barrel is kinda cheap I would have my doubts about that one.
Wow, 26 posts on barrel twist for the 308. As Lonewolf, says above you have bought the rifle, go shoot it, work up loads for it, have fun with it. If later you don't like the lenght cut it back, $40 for a 20 inch Shilen barrel is kinda cheap I would have my doubts about that one.
Re: 1 in 10 vs. 1 in 12 for .308
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: LoneWolfUSMC</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Clint Combs</div><div class="ubbcode-body">Here's the deal. Been wanting a .308 with a 20" for a while. happened into a great deal on an unfired Remington SPS varmint in .308 with the 26" barrel and grabbed it a little hastily. A guy I know has a shilen 20" barrel he will sell me for $40, but it is in 1 in 12. Torn between just grabbing the barrel and having it put on, and selling the rifle and getting a Remington SPS Tactical AAC. </div></div>
GET OFF THE INTERNET AND SHOOT THE RIFLE.
The 1:12 will shoot anything you can magazine load just fine. My suggestion is to sell the Shilen. Put a proper stock on the SPS-V and shoot it.
Many of us have shot 208 Amax rounds from 1:12 barrels. Are you planning on shooting anything heavier than that? </div></div>
+1!
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: LoneWolfUSMC</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Clint Combs</div><div class="ubbcode-body">Here's the deal. Been wanting a .308 with a 20" for a while. happened into a great deal on an unfired Remington SPS varmint in .308 with the 26" barrel and grabbed it a little hastily. A guy I know has a shilen 20" barrel he will sell me for $40, but it is in 1 in 12. Torn between just grabbing the barrel and having it put on, and selling the rifle and getting a Remington SPS Tactical AAC. </div></div>
GET OFF THE INTERNET AND SHOOT THE RIFLE.
The 1:12 will shoot anything you can magazine load just fine. My suggestion is to sell the Shilen. Put a proper stock on the SPS-V and shoot it.
Many of us have shot 208 Amax rounds from 1:12 barrels. Are you planning on shooting anything heavier than that? </div></div>
+1!
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