I've employed BR-2's in 7mm rem mags with good results, even in chilly temps. But, that was with rather large circumstance fill of H1000 and Reloder 26, and Truthfully I choose to use mag primers, they've not been detrimental to having steady velocities, so it will require away any stress https://z-ndh-tchen-small-pistol88405.widblog.com/86577519/how-cci-200-large-rifle-can-save-you-time-stress-and-money