I've made use of BR-2's in 7mm rem mags with good results, even in chilly temps. But, that was with very higher situation fill of H1000 and Reloder 26, and honestly I prefer to use mag primers, they've not been harmful to having consistent velocities, so it's going to take https://reidbbbwt.bloguetechno.com/cci-large-rifle-zündhütchen-an-overview-66822675