7mm ultra mag reloading

[chukar_chaser]

I was gifted a 7mm Ultra Mag. I have done some research, the gun has a 1 in 9.5 twist. Would it be able to stabilize a 175 grain bullet? Does anyone have any experience reloading this caliber?

 

[hicountry1]

Yes, I owned one for a while.

I used Retumbo and the 160ab, f215m primers, Remington brass.

I was getting 3300+ with that combo and easily sub moa.

There isn't much you can't hunt with that setup.

 

[A382DWDZQ]

That’ll stabilize a 175.

 

[DanMan]

How did your load turn out?
I loaded my 7RUM with 180 Berger VLD over Retumbo
and it was around .5 moa until the barrel toasted.
I've rebarreled to a 7PRC now expecting a much longer life.

 

[260shooter]

Interested in this cartridge also. Going to be my next build. I have a 9 twist Proof and want to shoot 180 ELD-M’s. Will the speed of the 7 RUM stabilize this bullet? I am at 500 asl. Any info is appreciated.

 

[rifletuner]

Surely its only a matter of time until Ryan necks it down to 6mm and we have the 6 Ultra UM?