As far as primers go, in some cases there could be a substantial variation in accuracy probable. Virtually each of the rifles I have tried out the CCI BR2s in have liked them. CCI BR2 Primers in inventory use specially picked cups and anvils for extra regularity. An independent researcher https://chancelvkwg.blogripley.com/32190213/the-single-best-strategy-to-use-for-cci-br2