So far as primers go, in some cases there might be a large difference in precision probable. Practically all the rifles I've experimented with the CCI BR2s in have loved them. We examined masses at both optimum typical pressures and in the starting masses (some labs work out begin loads https://z-ndh-tchen-small-pistol33790.goabroadblog.com/30855638/a-secret-weapon-for-large-rifle-magnum-zündhütchen