25 PRC project and load data
- Thread starter Alex Wheeler
- Start date
Alex Wheeler
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I do.
B23
Gold $$ Contributor
That's pretty darn impressive for a case this size and a 24in barrel but N570 is one of those powders that never seems to disappoint especially when it comes to velocity.
Curious, do you have the OAL pretty stretched out with those 133's to get that much 570 in there and or are you having to use a drop tube to help get it all in there? Due to the kernel size N570 can be one of the least pleasant powders to work with but if you can get enough in the case it generally produces the best velocities without going crazy on pressure.
With the 64.5gr load gaining little to no velocity over the 64gr load would you assume that's an indication 64gr is about the best you're going to get out of it with that powder/bullet/primer combo?
Alex Wheeler
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Yes you need a long drop tube or electric tooth brush to vibrate it in there. 62.5-63 is probably where its going to run at accuracy wise, which is about 3250 or so. He got 64.5 in there so 62.5 is not too bad. My reamer is throated like most of my reamers. Its not setup to fit a short action. Mid or long. But if a guy wanted to run it in a short he could just jump it more.
B23
Gold $$ Contributor
Would it work in SA that's cut to use a 3.100 Baney mag box? I was originally going to go this route with my 25 SAUM build but then switched to UM's det mag setup and XL mags because they allow up to a 3.150 OAL in the BAT Igniter action I'm using.
The SAUM has a little more capacity then the necked down 6.5 PRC case but I'm using a 22in Bartlein so that'll slow it down a bit but if I can get 3250 with the mid 134 ELD-M like you are with the 25PRC I'll be a happy camper.
Have you ever given any thought to building a 25 Western using ADG 6.8 Western brass? It would basically be like a 25 RSAUM Improved except it'd just be a straight neck down from the parent case and would be slightly shorter. Your 25 PRC kind of seems to be one of those Goldilocks cartridges though so maybe you haven't.
The SAUM has a little more capacity then the necked down 6.5 PRC case but I'm using a 22in Bartlein so that'll slow it down a bit but if I can get 3250 with the mid 134 ELD-M like you are with the 25PRC I'll be a happy camper.
Have you ever given any thought to building a 25 Western using ADG 6.8 Western brass? It would basically be like a 25 RSAUM Improved except it'd just be a straight neck down from the parent case and would be slightly shorter. Your 25 PRC kind of seems to be one of those Goldilocks cartridges though so maybe you haven't.
Alex Wheeler
Site $$ Sponsor
Yes it should work in a Bainey. Im personally not a huge fan of trying to cram things into short actions. Just creates problems that go away in a mid or long. I speced out a 25 western for customer and chambered it recently. He ended up around 3150 with h1000 in a 20" barrel. The prc is the only one with lapua brass though
It ended up working pretty well in a SA. However, I am having a new barrel made for a medium action. I think I was hitting pressure sooner than I would in a medium. It has to jump .245 as well. But I'm still getting over 3100 fps with 60 grains of 4831SC and great a accuracy. I'm so sn love with this cartridge I've done a 6 PRC, 7 PRCW, and a 338 PRC. It's all Alex Wheelers fault. 
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bobinpa
Gold $$ Contributor
Would a loaded round eject from a Remington short action?It ended up working pretty well in a SA. However, I am having a new barrel made for a medium action. I think I was hitting pressure sooner than I would in a medium. It has to jump .245 as well. But I'm still getting over 3100 fps with 60 grains of 4831SC and great a accuracy. I'm so sn love with this cartridge I've done a 6 PRC, 7 PRCW, and a 338 PRC. It's all Alex Wheelers fault.
I would love to hear more about that 338 PRC. Elk rifle? What is it set up to shoot? I have had the thought to put one together with 300gn Bergers; kind of like a bigger “308” type setup to see how it did at 1000yd BR.It ended up working pretty well in a SA. However, I am having a new barrel made for a medium action. I think I was hitting pressure sooner than I would in a medium. It has to jump .245 as well. But I'm still getting over 3100 fps with 60 grains of 4831SC and great a accuracy. I'm so sn love with this cartridge I've done a 6 PRC, 7 PRCW, and a 338 PRC. It's all Alex Wheelers fault.
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