300 PRC update

[JB.IC]

On the internet everyone’s rifle shoots 2-300fps faster and group sizes are at least 50% lower than you usually see in reality.

I understand that. We see it everyday on social media but I’ve see some things first hand that’s hard to believe.

For example, I have a buddy who did his first chamber job on a 6.5CM. We were shooting out to 2100yds with our 300PRC, 30SM, 375Cheytac, and 375EnABELR. He got his 6.5CM out to shoot it while the barrel were cooling of the other rifles. He connected 6 or so back to back shots at 2100yds. Then missed one or two and then made several more back to back shots and continued through 50 rounds he brought. He made more connections on the 2100yd target with his 6.5cm that day than all the other rifles combined. I had my target vision cam on the target because you can’t spot impacts in Arizona mirage.

So because I’ve seen some weird stuff happen, I try not to dismiss someone initially.

 

[phlegethon]

I understand that. We see it everyday on social media but I’ve see some things first hand that’s hard to believe.

For example, I have a buddy who did his first chamber job on a 6.5CM. We were shooting out to 2100yds with our 300PRC, 30SM, 375Cheytac, and 375EnABELR. He got his 6.5CM out to shoot it while the barrel were cooling of the other rifles. He connected 6 or so back to back shots at 2100yds. Then missed one or two and then made several more back to back shots and continued through 50 rounds he brought. He made more connections on the 2100yd target with his 6.5cm that day than all the other rifles combined. I had my target vision cam on the target because you can’t spot impacts in Arizona mirage.

So because I’ve seen some weird stuff happen, I try not to dismiss someone initially.

Oh, I agree. I think people in this thread are telling the truth about their results (not sure about some other places) but you also have to filter that with your own results and risk tolerance.

 

[Defender3]

FWIW - CAC Associates in PA has 1lb'ers of RL26 in stock - $26lb.

 

[robb_va]

I have never reloaded Hornady cases before or fired their ammunition and I'm questioning the results I am getting with my PRC.

I have a Ruger Precision RIfle with a 26 inch factory barrel. I got the following results:

- Hornady 225 ELD-M ammo went 2870 FPS. After firing, I couldn't get the cases to re-chamber. The case head had swelled .0019.

- 77 grains of RL 25 (max book load) in new Hornady cases went 2873 FPS. Fired cases would not re-chamber. Case head had swelled .0022.

- 74.4 grains of RL 26 (two rungs from the top of published max) in new Hornady cases went 2843 FPS. Fired cases would re-chamber but had swelled .0008.

I have reloaded 6.5 x 47 Lapua for years and even when I really stepped on it, I have never had a problem getting the fired cases to re-chamber. Is this normal for Hornady brass?

 

[phlegethon]

I have never reloaded Hornady cases before or fired their ammunition and I'm questioning the results I am getting with my PRC.

I have a Ruger Precision RIfle with a 26 inch factory barrel. I got the following results:

- Hornady 225 ELD-M ammo went 2870 FPS. After firing, I couldn't get the cases to re-chamber. The case head had swelled .0019.

- 77 grains of RL 25 (max book load) in new Hornady cases went 2873 FPS. Fired cases would not re-chamber. Case head had swelled .0022.

- 74.4 grains of RL 26 (two rungs from the top of published max) in new Hornady cases went 2843 FPS. Fired cases would re-chamber but had swelled .0008.

I have reloaded 6.5 x 47 Lapua for years and even when I really stepped on it, I have never had a problem getting the fired cases to re-chamber. Is this normal for Hornady brass?

Where are you measuring the case head, and are you using a blade micrometer?

 

[robb_va]

Just in advance of the extractor groove. I used a micrometer and a set of calipers. I don't have a blade micrometer.

 

[phlegethon]

Just in advance of the extractor groove. I used a micrometer and a set of calipers. I don't have a blade micrometer.

I could be wrong, but I’ve read a lot of discussion about this and it sounds like that amount of expansion at the pressure ring is normal, and without using a blade micrometer your measurement will probably include the pressure ring. The fact that you’re seeing this with factory ammo is also consistent with that, as it shouldn’t have extremely high pressure. As for not being able to rechamber a fired case without sizing, I don’t think that’s unusual. It depends on the chamber geometry.

 

[DAVETOOLEY]

If a fired case comes out without extreme using measures then it should go back in.
What happens when you try and put the fired case back in?

 

[robb_va]

If a fired case comes out without extreme using measures then it should go back in.
What happens when you try and put the fired case back in?

After firing the cases will extract without significant effort. There will be an occasional faint ejector mark on the case head, but no swipe.

The ones that stretched .0019 and .0022 will not re-chamber. The bolt will not close.

The ones that stretched .0008 will re-chamber and the bolt closes.

Also, the ones that stretched .0019 and .0022 require significant effort to run though my sizing die (Forster FLS - non bushing/Imperial wax). I have stuck 3 in the die and ripped the case head off and needed a case head tool to remove the remainder of the case from the sizing die.

 

[DAVETOOLEY]

If you see anything on the case head you've exceeded the yield point of the brass. That can vary from lot to lot and of course between manufacturers. And it happens often with factory ammo. I may be wrong but something doesn't seem quite right with the factory chamber.

 

[abn31c]

Maybe a short tenon cut?

 

[DAVETOOLEY]

After firing the cases will extract without significant effort. There will be an occasional faint ejector mark on the case head, but no swipe.

The ones that stretched .0019 and .0022 will not re-chamber. The bolt will not close.

The ones that stretched .0008 will re-chamber and the bolt closes.

Also, the ones that stretched .0019 and .0022 require significant effort to run though my sizing die (Forster FLS - non bushing/Imperial wax). I have stuck 3 in the die and ripped the case head off and needed a case head tool to remove the remainder of the case from the sizing die.

I've never had a Ruger through the shop so somebody correct me if I'm wrong. It has 1" diameter threads. If that is indeed true the chamber wall thickness, while it's safe, cannot handle high pressure rounds that diameter. When fired the case expands then the threaded steel tenon expands. If pressure gets to high the brass expands beyond its yield point and stretches to a diameter where when pressure subsides the brass then contracts slightly. At that point it is larger than the steel chamber which has returned to it's original size. Sounds like what's happening to you.

 

[Ledzep]

Savage .338 Lapuas like to do that, too.

 

[DAVETOOLEY]

You can't fool Mother Nature

 

[robb_va]

I've never had a Ruger through the shop so somebody correct me if I'm wrong. It has 1" diameter threads. If that is indeed true the chamber wall thickness, while it's safe, cannot handle high pressure rounds that diameter. When fired the case expands then the threaded steel tenon expands. If pressure gets to high the brass expands beyond its yield point and stretches to a diameter where when pressure subsides the brass then contracts slightly. At that point it is larger than the steel chamber which has returned to it's original size. Sounds like what's happening to you.

Thank you!

 

[Dpp]

Started to load for 300 PRC with 215 Berger hybrids for deer hunting.

non sammi spec chamber
COAL touching the lands 3.68”
seated .010” off the lands and it fits inside my internal box mag. I love when a plan comes together, I hope to push these around 2900 FPS

berger load recommendations using quick load
Barrel 26”
F215 primer
H1000
3.700” COAL
Start 80 2778
Max 84.1 2922
Start with min load and shoot groups at .015 off lands, then work .005 back into the cartridge to find seating depth. Once seating depth found find best charge weight.

I normally run cci200 but I’m out and need to order some, also will be hunting in the mountains and it gets cold so the magnum rifle primers will have to do! I will follow Berger’s recommendations and try out the 215 on deer.

 

[Defender3]

Started to load for 300 PRC with 215 Berger hybrids for deer hunting.

non sammi spec chamber
COAL touching the lands 3.68”
seated .010” off the lands and it fits inside my internal box mag. I love when a plan comes together, I hope to push these around 2900 FPS

berger load recommendations using quick load
Barrel 26”
F215 primer
H1000
3.700” COAL
Start 80 2778
Max 84.1 2922
Start with min load and shoot groups at .015 off lands, then work .005 back into the cartridge to find seating depth. Once seating depth found find best charge weight.

I normally run cci200 but I’m out and need to order some, also will be hunting in the mountains and it gets cold so the magnum rifle primers will have to do! I will follow Berger’s recommendations and try out the 215 on deer.

Is there a QL data set for 300 PRC? I'm running V3.9 and don't see one.

 

[phlegethon]

Is there a QL data set for 300 PRC? I'm running V3.9 and don't see one.

Yes, although I’ve had better results with Gordon’s Reloading Tools.

 

[b2lee]

For those that have replaced their 300 PRC barrels...what are you guys doing with your old barrels?

Case in point. My barrel has just under 1300 rounds through it...it shoots 0.75" with the occasional 0.50" group...anything larger is me. While this is better than some people's good barrel....when playing the 1 mile + game...I'm all over the place and thus the new barrel.

I'm sure if I cut off an inch at the muzzle and the rear...and re-chambered...it would be right back to shooting bug holes. It would make one hell of a 308 barrel...If I went from 28" to 24"...I'm sure it would shoot amazing. However....I've spent the last 10 years trying to shoot out my current 308 barrel...and it is shooting better now than it ever has. I recently let a new long range shooter in @Wolf90 shoot it out to 1000yds...and after 5000+ rounds...it is still hammering steel with relative ease.

So...what are you guys doing with your 'worn out' 300 PRC barrels?

 

[Defender3]

For those that have replaced their 300 PRC barrels...what are you guys doing with your old barrels?

Case in point. My barrel has just under 1300 rounds through it...it shoots 0.75" with the occasional 0.50" group...anything larger is me. While this is better than some people's good barrel....when playing the 1 mile + game...I'm all over the place and thus the new barrel.

I'm sure if I cut off an inch at the muzzle and the rear...and re-chambered...it would be right back to shooting bug holes. It would make one hell of a 308 barrel...If I went from 28" to 24"...I'm sure it would shoot amazing. However....I've spent the last 10 years trying to shoot out my current 308 barrel...and it is shooting better now than it ever has. I recently let a new long range shooter in @Wolf90 shoot it out to 1000yds...and after 5000+ rounds...it is still hammering steel with relative ease.

So...what are you guys doing with your 'worn out' 300 PRC barrels?

Can't answer your question, but what sort of velocities are you running? I was hoping to get 1500rds with loads in the 2850fps range.

 

[b2lee]

Can't answer your question, but what sort of velocities are you running? I was hoping to get 1500rds with loads in the 2850fps range.

I started out over 3000fps with 225 ELD-M's and even pushed a few 230's and 250's over 3000fps at 900ft ASL. I've 'backed down' to 2950fps on 230's and 2915fps on 250's. My next barrel I'm going to find a speed node around 2900fps with the 230's that is wide enough to take care of all my temp variations and then tune with seating depths.

My APA Lil'B brake is blended into the barrel to look one piece. It has never been removed from the barrel. I'm going to pull it off and recrown the muzzle and see what kind of difference that makes. It would be silly if that is all it took at this point to bring the long range accuracy back.

 

[Defender3]

I started out over 3000fps with 225 ELD-M's and even pushed a few 230's and 250's over 3000fps at 900ft ASL. I've 'backed down' to 2950fps on 230's and 2915fps on 250's. My next barrel I'm going to find a speed node around 2900fps with the 230's that is wide enough to take care of all my temp variations and then tune with seating depths.

My APA Lil'B brake is blended into the barrel to look one piece. It has never been removed from the barrel. I'm going to pull it off and recrown the muzzle and see what kind of difference that makes. It would be silly if that is all it took at this point to bring the long range accuracy back.

Maybe a touch of carbon where the brake mates to the barrel, or some gas cutting?

I intend to shoot the 220 Bergers over RL26 / N565. I'll report once I can break in the new Tooley barrel and develop some loads.

 

[phlegethon]

@b2lee, have you borescoped the barrel? I have talked to gunsmiths about rechambering in other situations and the consensus is it’s not worth it unless you are doing the work yourself. I have a 6 Creedmoor barrel that’s in a similar situation, seems a shame to throw it out. Maybe just box it up with the brass and shelve it for some unforeseen circumstance.

 

[b2lee]

Let me put it another way....I shoot hot enough loads...to where after about 6 firings...I've lost 32 of 100 pieces of ADG Brass....so yea...time to either back it down...or buy some RCC Brass....probably be best for me to back it down.

 

[phlegethon]

Let me put it another way....I shoot hot enough loads...to where after about 6 firings...I've lost 32 of 100 pieces of ADG Brass....so yea...time to either back it down...or buy some RCC Brass....probably be best for me to back it down.

Yeah dude. Don’t blow your face off. Maybe the next one should be like a .308-.375 Cheytac wildcat? Ackley Improved, obviously

 

[b2lee]

@b2lee, have you borescoped the barrel? I have talked to gunsmiths about rechambering in other situations and the consensus is it’s not worth it unless you are doing the work yourself. I have a 6 Creedmoor barrel that’s in a similar situation, seems a shame to throw it out. Maybe just box it up with the brass and shelve it for some unforeseen circumstance.

I have borescoped it many times....only because I'm looking for cleaning issues...and not to get OCD about pits and chatter marks. The barrel is still highly reflective due to Boretech being a badass cleaner for both carbon and copper....it never really got much copper. Everything appears to look great....beyond my expectations as far as simply looking at it...but I need to take it off and check it out closer.

As you saw at the TVP 2020 ELR match....I think you even have video of my 2336 attemp...I was knuckle balling all around the target. Yes..the wind was stupid...but earlier in the year....it was much easier for me to hit 2500yds....and I was really fighting for anything close on those 2336yd shots.

 

[b2lee]

@phlegethon Have you shot any 250 A-Tips yet? You were shooting the 230's the other weekend right?

My question is...has anyone notice the insane difference in rotational torque when going from a 225 or 230 to the 250's? I had my Atlas Bi-Pod locked down...and when fired it would can't me over pretty bad....and the bi-pod was so tight....that when I tried to correct can't....I had to put some muscle into the stock to turn it back over. Getting a Pheonix soon to do the tactical benchrest and F-Class stuff......I will see how it affects that one as well.

 

[phlegethon]

@phlegethon Have you shot any 250 A-Tips yet? You were shooting the 230's the other weekend right?

My question is...has anyone notice the insane difference in rotational torque when going from a 225 or 230 to the 250's? I had my Atlas Bi-Pod locked down...and when fired it would can't me over pretty bad....and the bi-pod was so tight....that when I tried to correct can't....I had to put some muscle into the stock to turn it back over. Getting a Pheonix soon to do the tactical benchrest and F-Class stuff......I will see how it affects that one as well.

I started to do some load development with them, but decided to go with the 230s. I didn't notice a huge difference in torque, but I didn't spend a ton of time with them. I was pretty rushed that week.

I did some prelim work on your wildcat (I hope you appreciate the name). GRT says it can push the 250s at 3120 fps with 124 grains of N570

 

[Defender3]

Damn, I may have to play with GRT.

 

[b2lee]

I started to do some load development with them, but decided to go with the 230s. I didn't notice a huge difference in torque, but I didn't spend a ton of time with them. I was pretty rushed that week.

I did some prelim work on your wildcat (I hope you appreciate the name). GRT says it can push the 250s at 3120 fps with 124 grains of N570

Heh...That's a LOT of powder to gain 100fps...then again...it would be much nicer on the brass than when I pushed a 250gr A-Tip over 3000fps. Anything bigger for me will be like a 37XC or similar. I'll probably end up building a rifle where reloading is easy...you just put the entire 1lb can of powder inside the brass...easy peasy.

 

[ubettcha]

I shot my prc for the first time 2 days ago. First 11 shots were with 225eldm factory ammo and pretty fast.
Gun spec are as follows
700adl 7mag donor trued. The bolt was sleeved pin bushed with tubb pin installed
Barrel Douglas xx 10tw lapped 3/4x24 muzzle thread for original beast brake opened to 3/4x24 thread 30"+brake
LSS-XL chassis will be changed as I had to load single shot.
I had a bit of copper for the first 6 shots then it cleaned up to none by shot 11. I had close to 50fps es with a shoot clean process 2906 to 2953. I hope to run this in an ESS and plan to run the 225eldm or 215/230 bergers. I'm pretty sure the 215's will run over 3100 easily with Rl 26 or Retumbo both of which I have more than 20#s of.

 

[jmm68]

HI, anyone shooting the Ruger RPR in 300 PRC here? I'm looking for group sizes with the factory barrel and if anything can be done to accurize that gun.
thanks in advance.

 

[Rocketmandb]

Happiness is...

Annealed, sized, ready to load for the weekend.

 

[Rocketmandb]

I posted this over in the DIY section, but figured my 300 PRC friends here would like to take a gander.

 

[Defender3]

I posted this over in the DIY section, but figured my 300 PRC friends here would like to take a gander.

I did this to my 2/3rds IPSC at Quantico today at 1000 with a Hornady 225. Hit just left of the bolt and sheared the top right off. I guess the 300PRC has some energy at 1000.

 

[Rocketmandb]

I did this to my 2/3rds IPSC at Quantico today at 1000 with a Hornady 225. Hit just left of the bolt and sheared the top right off. I guess the 300PRC has some energy at 1000.

A bit That's why I designed the stand. I couldn't come up with something that would keep standing in all ground conditions. In the mountains, the ground is very rocky, so I when I go there, I can jam in a stake type stand, then buttress it with rocks. It works fine most of time. But if I'm in BLM land in the hills, the ground is just too soft and the 300 PRC hits too hard. That's why I'm stoked that this stand works as well as it does.

 

[b2lee]

A little 300 PRC update. With about 1300 rounds down the barrel and like a light switch it started losing accuracy...I decided to give the old tried and trued JB Bore Cleaning Compound a go on the old 300PRC Bartlein barrel. After a thorough normal cleaning...I hit it with the JB as per directions...well Speedy's directions anyways. I started pulled more stuff out eventhough I thought it was clean. Not worrying about damaging the barrel....I mean it is shot out right? I cleaned the ever living poo out of that barrel. Dry patched it...bore scoped it to make sure I didn't have any residue left...and put it away until this morning when I went to the range.

Today's range session was primarily focused on 308....and fun....beautiful 72F with not a cloud in sight...maybe a 2mph right to left wind. Flat range with berms at 100yds, 150yds and 242yds. Installed the Magneto speed and loaded a fouler shot that was a 250gr A-Tip that was damaged on the Ogive from pulling.....Hornady 6x brass..... a HOT load of VV N565 and a seating depth that was magazine feedable for a 250gr A-Tip...which btw...is WAY TOO OVERPRESSURE now for an action that isn't built like a tank.

First shot blew a primer. Brass is toast....but barrel is fouled. Shot hit 1/2" below POA...speed...2884fps....below what I expected...but this was the first time every...I had a very heavy bolt lift.

Now..the subject of this post. I proceeded to shoot two five shot groups with Hornady 6x brass, VV N565 loaded a little too hot, and a crappy bullet in the Hornady 225gr Match...not the ELD-M....the old BTHP 225 with the low BC. Here is a pic of the first 5 shot groups MagnetoSpeedV3 readings.

The group measured 3/8ths and it was all horizontal...the vertical was almost unmeasurable. Now...granted...this load ruined the brass and it went straight into the recycle bucket....but I was amazed at the SD after some JB Bore compound. The second group was 1/2" and the speeds were about the same.

On the agenda today was testing out how close the Optimal Barrel Time listed in Gordon's Reloading Tool was to reality. I think I nailed it. While the speeds were close...the group was small...and vertical dispersion was almost nothing....I know you can shoot a small group with really high SD's. Today, with the 308 and 'pot luck' brass....I shot a nice 1/2" group at 100yds with an SD of 37.5. 100 yards isn't long enough to show much of a vertical dispersion due to speed differentials. The 308 was also guestimated at using the OBT calculator on GRTools and changing the seating depth and powder charge accordingly.

The highlight of my day was NOT me shooting...but spotting for my shooting buddy. First shot 1/4" above POA....second shot I call "Same hole"...3rd shot I call "Same Hole"....he thought I was messing with him.....4th shot was a flier and opened it up to 1/4"....5th shot opened it up to 3/8ths. He thought I was messing with him...so I told him we needed to take a walk....he was Peacocking all the way back to the bench when he saw 3 shots in the same hole....but that's why we shoot 5

Summary....JB Bore Cleaning Compound has been used for years and years....and I finally saw the light...I may get another few long range sessions out of this barrel yet before the other one arrives.

I hope you guys enjoyed your day at work while I was at the range

 

[Defender3]

A little 300 PRC update. With about 1300 rounds down the barrel and like a light switch it started losing accuracy...I decided to give the old tried and trued JB Bore Cleaning Compound a go on the old 300PRC Bartlein barrel. After a thorough normal cleaning...I hit it with the JB as per directions...well Speedy's directions anyways. I started pulled more stuff out eventhough I thought it was clean. Not worrying about damaging the barrel....I mean it is shot out right? I cleaned the ever living poo out of that barrel. Dry patched it...bore scoped it to make sure I didn't have any residue left...and put it away until this morning when I went to the range.

Today's range session was primarily focused on 308....and fun....beautiful 72F with not a cloud in sight...maybe a 2mph right to left wind. Flat range with berms at 100yds, 150yds and 242yds. Installed the Magneto speed and loaded a fouler shot that was a 250gr A-Tip that was damaged on the Ogive from pulling.....Hornady 6x brass..... a HOT load of VV N565 and a seating depth that was magazine feedable for a 250gr A-Tip...which btw...is WAY TOO OVERPRESSURE now for an action that isn't built like a tank.

First shot blew a primer. Brass is toast....but barrel is fouled. Shot hit 1/2" below POA...speed...2884fps....below what I expected...but this was the first time every...I had a very heavy bolt lift.

Now..the subject of this post. I proceeded to shoot two five shot groups with Hornady 6x brass, VV N565 loaded a little too hot, and a crappy bullet in the Hornady 225gr Match...not the ELD-M....the old BTHP 225 with the low BC. Here is a pic of the first 5 shot groups MagnetoSpeedV3 readings.

View attachment 7441680

The group measured 3/8ths and it was all horizontal...the vertical was almost unmeasurable. Now...granted...this load ruined the brass and it went straight into the recycle bucket....but I was amazed at the SD after some JB Bore compound. The second group was 1/2" and the speeds were about the same.

On the agenda today was testing out how close the Optimal Barrel Time listed in Gordon's Reloading Tool was to reality. I think I nailed it. While the speeds were close...the group was small...and vertical dispersion was almost nothing....I know you can shoot a small group with really high SD's. Today, with the 308 and 'pot luck' brass....I shot a nice 1/2" group at 100yds with an SD of 37.5. 100 yards isn't long enough to show much of a vertical dispersion due to speed differentials. The 308 was also guestimated at using the OBT calculator on GRTools and changing the seating depth and powder charge accordingly.

The highlight of my day was NOT me shooting...but spotting for my shooting buddy. First shot 1/4" above POA....second shot I call "Same hole"...3rd shot I call "Same Hole"....he thought I was messing with him.....4th shot was a flier and opened it up to 1/4"....5th shot opened it up to 3/8ths. He thought I was messing with him...so I told him we needed to take a walk....he was Peacocking all the way back to the bench when he saw 3 shots in the same hole....but that's why we shoot 5

Summary....JB Bore Cleaning Compound has been used for years and years....and I finally saw the light...I may get another few long range sessions out of this barrel yet before the other one arrives.

I hope you guys enjoyed your day at work while I was at the range

What are the specs on your new barrel and who is spinning it up for you?

I had five boxes of H225 ELDMs arriving so I could finish my barrel speed up with the same ammo this weekend. Ordered the ammo from GB and it arrived yesterday. Of course, they shipped 212 ELD-X Hunter, not the Match.

 

[b2lee]

What are the specs on your new barrel and who is spinning it up for you?

I had five boxes of H225 ELDMs arriving so I could finish my barrel speed up with the same ammo this weekend. Ordered the ammo from GB and it arrived yesterday. Of course, they shipped 212 ELD-X Hunter, not the Match.

Old barrel was 28" and my new barrel should finish out around 29"....1-9tw Bartlein. Greg Young and Russ Rosene at Southern Precision Rifles aka Bug Holes spun up the first one and have all the specs so they can spin this one up and mail it to me and then I can change it out myself. When I can...I'll have a third barrel sent to me as well....always nice to have a back up...you know...just incase some crazy pandemic hits and everyone freaks out and buys gun stuff and you get placed on absurdly long waiting lists....o wait...that'll probably never happen.

But I won't flute this next barrel....and I'll use a self timing muzzle brake so I can remove it after every range session and get the carbon crud off the crown. With the blended...aka...non-removable muzzle brake I had on before...when I finally took it off...geez I had a lot of carbon caked on that crown...no wonder I couldn't get below a 5" group at 1000yds....heh....yea..I'll blame the cake.

 

[Earnhardt]

Does SPR use a SAAMI .300 PRC reamer?
Or do you supply a reamer?
Thanks

 

[b2lee]

Does SPR use a SAAMI .300 PRC reamer?
Or do you supply a reamer?
Thanks

It is a SAAMI spec...but you can supply one if you so choose. They did mine back in the dark ages of early 2019...I sent some retail box ammo to make sure that the supplied reamer matched up ok...I was the first 300PRC for them I think.....and there have been many many more since. I was a front runner...but man did the 300PRC catch on. The other day I was walking down the street and I saw two dogs...one had a 300prc....and the other one had that sad look in his eyes....he wanted one..but couldn't afford it yet.....thus...everyone and their dog has a 300prc now a days.

 

[jmm68]

hi folks, quick question from a newbie, I’m using 175gn nosler competition for barrel break in, do you think that the thread erosion is the same if I use 80 gn of N565 with the 175gn bullet compared with using 225 or 230 bullets with the same 80gn?
Thanks and regards from Switzerland.

 

[phlegethon]

hi folks, quick question from a newbie, I’m using 175gn nosler competition for barrel break in, do you think that the thread erosion is the same if I use 80 gn of N565 with the 175gn bullet compared with using 225 or 230 bullets with the same 80gn?
Thanks and regards from Switzerland.

Throat erosion correlates with velocity, so it should be higher with lighter bullets. Also barrel break in is a waste of time.

 

[Defender3]

Maybe he means until the barrel speeds up versus break in.

 

[phlegethon]

Maybe he means until the barrel speeds up versus break in.

That could be. I would still do seating depth testing with the bullets you plan to shoot, which should take care of that hundred rounds or so.

 

[Defender3]

I was shooting at 600y today at Quantico. This Dave Tooley 27" Bartlein barrel has sped up right at 100rds. The berger 220s over IMR7977 were clocking 2810 initially and are now at 2840.

I also shot some of the 212 ELD-X Hunters today - not bad - 2905fps and grouped well, even in gusting winds. Top shot is cold bore, then four more. The amount of energy this round has is telling, my 2/3rds IPSC was flapping in the wind with each hit.

 

[phlegethon]

Lapua brass may be coming:

Lapua PRC Magnum Brass

Hello all. Couldn't find another thread so decided to post what I stumbled over. Don't get too excited yet, but scan yours eyes over this NIOA Lapua brass order list. It lists not only 300 Win Mag brass (4PH7096), but also 300 PRC (4PH7098) and 6.5 PRC (4PH6023)...

www.snipershide.com

 

[b2lee]

If it does...I'll buy 200 pieces before the 'normies' get a chance..... heh...just kidding with you @phlegethon I'm abnormal...but not in a good way. If however I did get a chance to purchase early...I'd grab 100 for you as well.

 

[2aBaC̶a̶]

Would like to test some quality brass but Hornady is working fine for me.

 

[b2lee]

Powder Valley.... H1000 1lb IN STOCK.... RETUMBO IN STOCK!!!