7 saum opinions

[smokinbobf4]

I went with the short. Would have gone medium if the hnt26 chassis would be available in it.


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[ormandj]

Just a little more on the 7 saum. Mines on a SR3 long action because that’s what I had and I hate length restrictions. Mines pushing the 180 Eldm at 3050 with h-1000. Easy recoiling super accurate. I couldn’t come close to that in my 280ai. Just center punched a nice coues at 730 last month. Very impressive cartridge

280AI with same length barrel and projectile? What brass were you using, and what velocity did you end up with?

 

[codym]

The 280 AI was a 24’ proof, nosler brass, 175 bergers and RL23 I was hitting pressure at 2900 roughly, need to check my notes for exact numbers

 

[ormandj]

The 280 AI was a 24’ proof, nosler brass, 175 bergers and RL23 I was hitting pressure at 2900 roughly, need to check my notes for exact numbers

Thanks, if you know charge weight that'd be great info! How much H1000 in the 7SAUM?

 

[Jackthebear]

The Sherman Short Mag is a 7 saum with the case walls blown out wider, the shoulder pushed back shorter and angle changed to 40 degrees so that the 180 vld fits in a short action magazine and has more case capacity than a SAUM. It is exceedingly easy to load for and is very efficient and accurate. Although I have used Proof, apparently their carbon fiber barrels have had problems recently so I would recommend another brand.

I shoot 180 vld at 3050 with a middle load of RL 26 out of a 26 barrel and its about 20-25 fps per inch that you lose as you shorten. You could shoot a 180 VLD above 2900 in a 22 inch and a 168 at or above 3000 fps. I'd say the 7ss gives the same velocity with a barrel two inches shorter than the 7 saum.

Are these magazine fed or run with a BDL set-up?