What 7mm magnum cartridge to build?

[Mike Matteson]

I thought about I've run the 300 and 338rum for a couple of years now. And I think I'm looking for something that doesn't eat up as much powder.

You might look at chambering for a 300WM case but to 7mm. The 7mmRM is a little shorter to the shoulder than a 300WM case. I am not for sure why the 7mm RemM case is a little shorter to the shoulder.

 

[chav0_12]

Personally I'd do a PRC or a Nosler but the Nosler gets my nod. I have one and the only downside is the magazine length. So when the barrel is done I'll put a PRC barrel on it, then build another Nosler with more mag length.

 

[Justice1327]

You might look at chambering for a 300WM case but to 7mm. The 7mmRM is a little shorter to the shoulder than a 300WM case. I am not for sure why the 7mm RemM case is a little shorter to the shoulder.

The 7mm RM is built off the 338 WM case.
Highly recommend the 7mm Practical w/ 300 WM Long Brass