So far as primers go, often there could be a massive variance in accuracy likely. Just about all of the rifles I've tried the CCI BR2s in have beloved them. Actually some in their their claims are pretty legitimate. The CCI34 primers are less sensitive they usually do match magnum https://gregorydbyup.fireblogz.com/62908032/5-essential-elements-for-cci-large-rifle-zündhütchen