25 PRC

[Far North Hunter]

My BTD on adg brass, once fired, is 1.651. I trimmed the neck walls .148. I also ran the cutter back into the shoulder reducing some of the prior to necking down. I also annealed prior to necking down.

 

[Eman1982]

My 25-6.5 PRC built on a 7.5 twist is doing bugholes with VV 560. My next workup looking for more velocity will be using VV 565. View attachment 519906

Barrel length? I would think N560 would be faster than N565.

 

[Far North Hunter]

Barrel length? I would think N560 would be faster than N565.

24" Bartlein #3b - 8twst

 

[haisardao]

What dies do you guys run for this cartridge? Do you use a bushing FL die to resize with the appropriate bushing, and a 6.5 PRC seater with a .25 caliber stem? Or you hit custom dies?

 

[mullmann03]

View attachment 519915

I just finished up testing with H1000 in the 25PRC. At .020 off 57.5 and 58 grains opened up. 56.5 and 57 almost over overlapped so I went with 57. I am switching to H1000 over N565. I was having to clean the barrel after 20-30 rounds due to groups opening up. In my experience with H1000 in a 300RUM I could go forever without having to clean and groups stayed the same.

C6 7T Barrel 21 5/8" suppressed
New ADG brass
BR-2 primers
Berger 135
.020 off lands, 2.380CBTO

56.5G 2950
57 2970
57.5 3000
58 3030 heavier bolt lift.

EDIT:
58 grains of N565 was averaging 2940
59 pressure

 

[K.E.C. Darkside]

I just finished up testing with H1000. At .020 off 57.5 and 58 grains opened up. 56.5 and 57 almost over overlapped so I went with 57. I am switching to H1000 over N565. I was having to clean the barrel after 20-30 rounds due to groups opening up. In my experience with H1000 in a 300RUM I could go forever without having to clean and groups stayed the same.

C6 7T Barrel 21 5/8" suppressed
New ADG brass
BR-2 primers
Berger 135
.020 off lands, 2.380CBTO

56.5G 2950
57 2970
57.5 3000
58 3030 heavier bolt lift.

EDIT: Delete.

 

[wasskeet]

What dies do you guys run for this cartridge? Do you use a bushing FL die to resize with the appropriate bushing, and a 6.5 PRC seater with a .25 caliber stem? Or you hit custom dies?

Can't speak for 25 PRC, but I use Whidden FL bushing sizer w/ appropriate 6mm bushing along with their seater with the 105 hybrid seating stem. Seems to work fine other than crunching a few pieces of brass - always first new piece in session?

 

[haisardao]

Can't speak for 25 PRC, but I use Whidden FL bushing sizer w/ appropriate 6mm bushing along with their seater with the 105 hybrid seating stem. Seems to work fine other than crunching a few pieces of brass - always first new piece in session?

Thanks!

 

[haisardao]

I just finished up testing with H1000. At .020 off 57.5 and 58 grains opened up. 56.5 and 57 almost over overlapped so I went with 57. I am switching to H1000 over N565. I was having to clean the barrel after 20-30 rounds due to groups opening up. In my experience with H1000 in a 300RUM I could go forever without having to clean and groups stayed the same.

C6 7T Barrel 21 5/8" suppressed
New ADG brass
BR-2 primers
Berger 135
.020 off lands, 2.380CBTO

56.5G 2950
57 2970
57.5 3000
58 3030 heavier bolt lift.

Those are great numbers, funny how case capacity works, that's where I found pressure with 6.5 PRC and 140 Bergers hybrids.

 

[mullmann03]

I'm missing what caliber.
No way your only running 58gr of H-1000 in a 300RUM .
But it is only 21" barrel.

No. I was saying I am switching my 25prc to H1000 due to N565 getting dirty quick. When I used H1000 in my RUM I never had issues with it getting dirty.

 

[Eman1982]

I just finished up testing with H1000 in the 25PRC. At .020 off 57.5 and 58 grains opened up. 56.5 and 57 almost over overlapped so I went with 57. I am switching to H1000 over N565. I was having to clean the barrel after 20-30 rounds due to groups opening up. In my experience with H1000 in a 300RUM I could go forever without having to clean and groups stayed the same.

C6 7T Barrel 21 5/8" suppressed
New ADG brass
BR-2 primers
Berger 135
.020 off lands, 2.380CBTO

56.5G 2950
57 2970
57.5 3000
58 3030 heavier bolt lift.

Barrel length?

 

[mullmann03]

Barrel length?

21 5/8"