6 PRC with N570

[khuber84]

Berger has done a heavy for caliber EOL now with the 245, 195, and 156, they already have a 115 vld.
Please Jesus let the 6mm be next!

Berger has done this indeed. They've gone about 8% up in weight compared to their already produced offerings in each caliber. So in theory, their new 6mm would weigh 118-123gr. This will require a 7tw. A 7tw short mag will likely push these bullets to very high rpm, causing failures. In a 7tw, 2900mv would get you right at 300k rpm, and with a 7tw 3100mv would be the 300k limit.

 

[huntnful]

New 26” barrel with 60gr. N570, CCI 200 and a 109 ELDM. 58 degrees this morning. 5 shots.

 

[khuber84]

New 26” barrel with 60gr. N570, CCI 200 and a 109 ELDM. 58 degrees this morning. 5 shots.

View attachment 758171

In a 20", you feel running 108-112gt bullets is totally psi safe at 3200fps? Freebore dependant of course.

 

[huntnful]

In a 20", you feel running 108-112gt bullets is totally psi safe at 3200fps? Freebore dependant of course.

I’d imagine you’d land right around there somewhere just based off what I’ve seen. I’m only 2 barrels worth of data though. You’d definitely need a little longer freebore

 

[T_Widdy]

In a 20", you feel running 108-112gt bullets is totally psi safe at 3200fps? Freebore dependant of course.

I’m at 3140 in a 20” and am pretty close to pressure but I do have a shorter fb

 

[khuber84]

I’m at 3140 in a 20” and am pretty close to pressure but I do have a shorter fb

Curios on your barrel specs, is it a 237 or 236 bore? Seems a lil slower than expected.

 

[T_Widdy]

Curios on your barrel specs, is it a 237 or 236 bore? Seems a lil slower than expected.

proof 4 groove, 1:7.5. Shoots 109’s great!

 

[khuber84]

proof 4 groove, 1:7.5. Shoots 109’s great!

Proofs are 237 bore. They typically shoot pretty good, but I've had a few that were on the tight side.