25-7prc or 25 saum

[willfrye027]

I have to ask though, is 2920 where you got the best accuracy and SDs?
I can run my 6.5 creed beyond 2800 with 147 eldms and H4350, but accuracy and an SD of 4 is at 2700.

A 134 eld at 2900 drifts 1.71 mils at 1k in a 10mph L to R crosswind, impact velocity 1730
A 147 at 2700 drifts 1.76 mils with an impact velocity of 1662
That's with me reducing the 6.5 velocity significantly for optimal match shooting

2920 is about a grain below pressure. 10 shot groups are 1.1MOA at worst, IIRC. It has good vertical at 700 yards and beyond at sea level so the load is more capable than I am in the field..so it does everything I need it to.

Comparable groups/loads in a factory 24” tikka 6.5 creedmoor were 2720 after trying multiple powders to get it there.

Maybe there is a better node with less velocity but I stopped believing in nodes and haven’t looked back

 

[WKR]

7prc next to 135 berger at 3.260” Medium vesper is good for 3.4” That should be ideal even with the 145s.
I just ordered a steel Bartlein and they told me 6 months. But the wait for the carbons could be longer.
View attachment 688959

3.4 with the UM bottom metal...I would prefer a flush fitting mag like the hawkins. I tend to always carry my rifle in hand rather than a sling and thats typically where I carry from. Right around the balance point.

 

[Quicksilver]

Just got off the phone with Barry at Benchmark, put an order in for a Carbon .257 7 twist to be finished at 18". Will be awhile before I see it but thats all right.

Is that medium vesper a 2 lug 90° bolt throw?

Barry is good stuff, been there a long time! I say hi every time I go pick up a barrel from them. I just got a .25 heavy palma to finish at 27”…for what yet I don’t know

 

[Mountainrancher]

I'll probably shoot the 145 blackhole out of the 25-7 prc. My 25 creed sure likes them.

Have you used the 145s on game?

 

[WKR]

Have you used the 145s on game?

No not yet, but they should preform like a berger. I believe Blaine used the berger J4 jackets.

 

[WKR]

Bumping this thread,
Curious what yall think predicted barrel life would be on either cartridge?
I've got a buddy that wants me to put something together similar to mine but wants a little more barrel life incase he gets into NRL comps, I think I might do a 25 saum for his or maybe even a .25-284.

My guess is
25-7prc 800-1000 rounds
25 saum 1000-1350
25-284 1200-1500

Anybody with more insight on really overbore cartridges please enlighten me if I'm way off.

And yes. Before anyone gets on their high horse, I do shoot enough to burn barrels. So its a valid concern.

 

[sportsmans challenge]

Bumping this thread,
Curious what yall think predicted barrel life would be on either cartridge?
I've got a buddy that wants me to put something together similar to mine but wants a little more barrel life incase he gets into NRL comps, I think I might do a 25 saum for his or maybe even a .25-284.

My guess is
25-7prc 800-1000 rounds
25 saum 1000-1350
25-284 1200-1500

Anybody with more insight on really overbore cartridges please enlighten me if I'm way off.

And yes. Before anyone gets on their high horse, I do shoot enough to burn barrels. So its a valid concern.

Just looking at your guessing I would say saum or 25-284/25-6.5prc same capacity depending on bolt face and/or dies on hand.

 

[coleman]

For those of you with the 25 saum, what freebore do you have? I’m looking at getting a reamer spec’s now. Thanks

 

[sportsmans challenge]

For those of you with the 25 saum, what freebore do you have? I’m looking at getting a reamer spec’s now. Thanks

The one used on my rifle was .345 thou

 

[wind gypsy]

The one used on my rifle was .345 thou

Thats some weatherby length throat.

 

[liv4thehunt1]

I have built a dozen .25 Cal’s in the last year. From .25 Creedmoor to 25 Sherman. The favorite so far has been the Quarter pounder. It’s a 25-260 with a 30 degree shoulder. We did the first one on a 22” Bartlein and plus p’d it shoots 134’s at 3100 fps. Then we did one on a 22” pac-nor and did a cone shaped improved throat and it also shoots 134’s at 3100. That’s 975 foot pounds at 1000 yards. Recoil is laughable. I just did 2 more Quarter pounders on 20” barrels and both are sub 7 pounds scoped. Details to follow.