Unknown munitions mag and bottom metal?

I have a 7prc built with a vespar medium, 3.4 mag length. Works awesome with factory ammo, Hornady bullets, and berger vld's.

If you're thinking berger 180 hybrids or 175 elites you may have to jump emm a bit for mag length. There isn't much left in the neck when seated to the lands with a saami reamer... which has a little too much freebore for those two bullets in my opinion.
 
You need to know exactly what you are doing with your stock and reamer.

Easy button is long action. You can run the longest bullets and never have to worry about magazine length.

Zach (above) and I spec'd a short freebore reamer specifically for berger 175 and 180s that fits the medium perfect.

Really talk to your Smith
 
Just ordered the same last week, but for a 6 Max. Ffl contacted me yesterday that it's in. No real help to you at this point, but want to keep up on what you find. Always wanted a BAT action.
 
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