I tried them but there CCI 250LRM primers worked superior in my rifle along with the mags are superior up below do to hunting at -forty temps So far as primers go, occasionally there might be a large change in accuracy probable. Virtually many of the rifles I have tried https://z-ndh-tchen-large-pistol48262.bloggerbags.com/36785866/not-known-details-about-cci-br-2