I am confident you might utilize them, almost certainly without any concerns, but inside of a 300 wm, I'd personally personally consider to find some Federal GM215M primers, or large rifle magnum gold medal match primers, particularly if you hunt in chilly circumstances. I've used BR-two's in 7mm rem mags https://z-ndh-tchen-cci-br491245.activoblog.com/33077904/the-federal-100-diaries