It will run fine, probably a little dirty. Accuracy differs rifle to rifle.
My only concern would be if you're planning to reload these cases, most M80 have a crimped primer pocket.
If you want to save brass for reloading then it might be worth spending a little more on your first couple boxes of ammo.
Or get a pocket reamer..
Crimped primers really arent an issue to people who know what they are doing
Anyone have an opinion on PPU or S&B FMJ loads in the Stag 10?
I was wondering if anybody has used American Eagle 149 grain FMJ 7.62x51 in their Stag 10, and if so, how did it perform? I will develop an accurate handload for hunting, but am wanting some bulk ammo for break-in and ringing steel.

Here is my result with my stag-10, BSF 20 inches barrel (twist 1:10), V7 titanium BCG and efltmann AR10 trigger.
I just shot it today, first time ever I shot my stag-10. Distance is 100 yards, left group is 10 rounds of Federal lake city 149grain FMJ, right group is 10 rounds of Lapua Scenar 185 grain HPBT.
I'm sure I'll great great result with my reloads
View attachment 219023




























