7 PRC & Ramshot Magnum

[Sneuses]

Found a pretty sweet load today.

Peterson brass
Case length 2.268
Coal 3.324
Primer CCI250
Berger VLD 168 grain
Reloder 26 66.3 grain

 

[Korhil78]

What's the speed on that?!

 

[Sneuses]

What's the speed on that?!

Hornady says a 66.7 grain drop of RE26 is doing 3050. But there casings are substantly lighter than Peterson brass and I'm using a Brux barrel that's 26.5 inches long. So I would ball park mine at about the same maybe 3025 no chronograph on it today. Just testing

 

[Wilderness Blacktail]

I am in a conundrum. ..

Therefore, I am running 120-150 fps less than what's published for the 7 PRC. This is pretty disappointing. I am starting to believe Ramshot Magnum isn't a good match for the 7 PRC's case capacity.

Anyone else have a similar or different experience?

I have. But its numerous powders for me leading me to think i have one of them slow Proofs Ive read about. Its 22" as well and 200fps slower than some book loads.

Also have experienced certain fast book powders not liking my barrel and giving slow speeds but loving others and clipping right along, seen numerous times.