I've used BR-two's in 7mm rem mags with good results, even in chilly temps. But, which was with rather high case fill of H1000 and Reloder 26, and honestly I prefer to use mag primers, they've not been detrimental to finding regular velocities, so it will take away any fear https://zndhtchensmallrifle88532.blog-eye.com/31670509/federal-small-pistol-no-further-a-mystery