300 PRC update

Kiba

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I sent my action and trigger in when this all started, and Justin just called and said it is ready to ship back. New cocking piece and turned down bolt body.
Is there any reason to not modify to small pin?
$175 I can spend on chambering instead? :p

Larger concern is lack of warranty support from AI if anything goes wrong with the bolt down the road-- no free warranty work on the bolt if you bush it. I don't expect any issues though.

I'm probably just going to have it bushed anyways, but wanted to see if cratering with a large firing pin with the 300PRC was a concern before shipping the bolt off.
 

gregsjt

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Usually people are busing firing pins so they can shoot cases with small rifle primers like the 6.5 Creedmoor. I'm not sure it does anything for you in a case that only uses large rilfe primers like the 300 PRC. Maybe someone has another opinion, but I wouldn't waste the time or money.
 

NVScout

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Little range report from a fresh build ! I replaced a 28 Nosler barrel on my SR3 with a proof savage prefit and am pretty impressed so far. Here are shots 20-40 with factory 212’s and 225’s. Can’t wait to see how some 230 A-tips pan out.
 

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8nbait

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Little range report from a fresh build ! I replaced a 28 Nosler barrel on my SR3 with a proof savage prefit and am pretty impressed so far. Here are shots 20-40 with factory 212’s and 225’s. Can’t wait to see how some 230 A-tips pan out.
Did you get any velocities?

My rifle shoots the 212 factory ammo in the .3’s at 2830 FPS.

I pulled apart 2 each from two different boxes. All four had exactly 78.5 powder with 215 primers.

I thought it was H1000 until I shot it over the magnetospeed and got 2830 FPS average. Maybe it’s retumbo?
 

NVScout

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Did you get any velocities?

My rifle shoots the 212 factory ammo in the .3’s at 2830 FPS.

I pulled apart 2 each from two different boxes. All four had exactly 78.5 powder with 215 primers.

I thought it was H1000 until I shot it over the magnetospeed and got 2830 FPS average. Maybe it’s retumbo?
26” barrel
 

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8nbait

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Thanks, I have a 26” bartlein 3B, 9 twist with over 200 rounds fired, seems slow compared to yours.
 

Rocketmandb

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First off, this thread has cost me a bunch of money. I want you all to know that. It's going to cost me more money, as I have decided to start getting parts together for a new rifle build in 300 PRC that essentially matches my 6mm BRA.

To summarize:

- Defiance Deviant long action
- Bix trigger
- Manners PRS 2 stock
- Same barrel as I have on my current 300 PRC - Bartlein 1-9, 28", but heavy palma instead of M24.
- APA Lil B brake
- Badger DBM
- MPA one-piece mount
- Arca rail

I figure it will happen some time next year as I want a specific camo on the Manners and am willing to wait for it. And with Manners, you have to wait... and wait... and wait...
 

b2lee

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I'd like to shoot more...but it seems I can't find Retumbo, RL26, nor H1000 in stock. I found some Unicorn dust...but they laughed at me when I asked if they had any of the above powders coming in soon.

Anyone played with Vihtavuori N565 yet?
 

Dschapp44

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I have not, can't find that that one. If i didn't have any of the above maybe H4831sc would work. it's definitely going to be slower but better than nothing.
 

b2lee

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For some reason, my burn rate chart doesn't list RL 26....however... N570 is slightly slower than Retumbo...which I've had excellent luck with...and H1000...which several of you have had good luck with. With my 28" barrel...N570 may work real well. I was thinking N565 for the 230gr A-Tips...but I can try the N570.
 

tinytigers

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Is anyone shooting 300 prc out of a shorter barrel? I’m thinking about building one with a 20” but wondering if it’s worth it.
 

b2lee

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And here I was thinking I should have gone 30" instead of 28" and you guys want to go all the way down to 20 inches. Is this to lower the weight for a hunting rifle? I have been experimenting with slower powders...now you go shorter.....something to think about....

I'm going to guess...going from a 24" to 20" is going to be able 140/sec reduction in muzzle velocity...based off my experiment with 308 and 300WM.
 

b2lee

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7lb hunting rifle is the goal
What action and what barrel contour you going with? You going to flute the bolt and the barrel? What stock do you think you will use? I may try to do about the same thing...but in a 6.5PRC for hunting...and the 300PRC as a ELR gun.

I watched a vid of a guy shooting a moose in the chest with a 6.5PRC..suprised the hell out of me how quick that bull went down. Was trying to turn him for a double lung shot...but took the front and I guess got the heart. I don't hunt anything bigger than elk....so looking at the 6.5PRC for that.

I'd like to smoke a boar with my 300PRC though...I hate piggies.
 

tinytigers

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I’ll either wait for the mega fix and put a proof barrel on that or do a t3 lite with a proof barrel if Q keeps takin their time. A TT 3-15m and ultra 7 should keep the whole setup below 10lbs.
 

LakuNoc

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Not sure you guys want 300PRC under 10lbs. I personally prefer hunting magnum rifle around 10lbs. But thats just my opinion everybody is different. Any load data on 230gr A-Tip with H1000?
 

b2lee

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Not sure you guys want 300PRC under 10lbs. I personally prefer hunting magnum rifle around 10lbs. But thats just my opinion everybody is different. Any load data on 230gr A-Tip with H1000?
Heh...I'm not wanting a 300PRC under 20lbs myself...and with an aggressive muzzle break. I think I'm at about 25lbs and going up now.

I haven't found any H1000 in stock anywhere....tried the Magic Fairy Dust store down in the Fairy District....they just laughed at me. Been running Retumbo with the 230gr A-Tips...but now I'm out of Retumbo....and only have 100 rounds loaded :(
 

LakuNoc

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Im with you on weight of rifle. 12lbs at least for me even at hunting rifle, so what FPS you getting with Retumbo running 230A-Tip?
 

b2lee

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Bartlein 28" 1-9tw running 80.5 grains was averaging 3040fp/s across 2 different chornos. I should have my Labradar back soon....I...err....dropped it.
 

jwknutson17

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Bartlein 28" 1-9tw running 80.5 grains was averaging 3040fp/s across 2 different chornos. I should have my Labradar back soon....I...err....dropped it.
Awesome speed with the 230 atip. That was my plan is to get the 230 Atips at 3k plus but some were saying not possible or its WAY over pressure and get a norma instead. Even in the 29" tube I was going to spin up. I figured it wouldn't be hard to get but I'm glad you are seeing it without issue.

I'm still slinging the 215s with H1k and finally cracking into my stock of RL26 this week to get some more speed out of it.
 
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gnochi

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With the 230s it’s probably also worth looking at N560 and N570.

On another powder searching note, anyone know where to get ReloadSwiss powders stateside? QL says that a 198 Flatline and 30in barrel gets almost 100fps with RS-76 over RL-26.
 
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LakuNoc

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I will be running 26inch proof barrel.
230A-Tip with H1000 hoping i can get them to 2900FPS.
 

tinytigers

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Not sure you guys want 300PRC under 10lbs. I personally prefer hunting magnum rifle around 10lbs. But thats just my opinion everybody is different. Any load data on 230gr A-Tip with H1000?
If it didn’t have a break or can I’d agree with you. I shoot a 12lb 338 and it’s not nearly as bad as you’d think. Feels about like a 12 gauge with slugs. Without the break it’s a bit more painful, but still not unbearable. My 458 win on the other hand... fuck that gun
 
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Mikemo

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Several posts back, Dave Tooley used the phrase "easy button" to describe the update from 300 win mag to 300 PRC. I am hoping that also applies to the Rem 338 win mag. My current config includes a detachable 3 round mag box that measures 3.70 inches. Will I be able to make the conversion with a simple barrel change?
 

gnochi

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Several posts back, Dave Tooley used the phrase "easy button" to describe the update from 300 win mag to 300 PRC. I am hoping that also applies to the Rem 338 win mag. My current config includes a detachable 3 round mag box that measures 3.70 inches. Will I be able to make the conversion with a simple barrel change?
Is that the internal measurement on that mag box?
 

JakeM

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Will the .300 PRC run in .300wm mags or would i need XL bottom metal and CIP mags to make it work?
I'am thinking about rebarreling my .300wm to .300 PRC.
 

jwknutson17

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Will the .300 PRC run in .300wm mags or would i need XL bottom metal and CIP mags to make it work?
I'am thinking about rebarreling my .300wm to .300 PRC.
CIP mags to make it worth it. If it's a rem 700 get the KRG bravo LA stock for a cheap fix to that issue. The Cadex SH deal for the Strike nuke isn't a bad budget option either. But if your going to rebarrel and need another stock or chassis, might as well start fresh.
 

JakeM

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Do you know about what it would cost to thread and chamber the new barrel and put it on?
 

Ledzep

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Usually $250-350 for a thread/chamber, then another $75-120 for muzzle threads. Give or take depending on the smith.