Is CCI Mini-Mag .22 LR 40 Grain CPRN Worth It for Regular Range Use? CCI Mini-Mag .22 LR 40 Grain CPRN is generally considered worth the higher cost for shooters who prioritize reliability over absolute price per round. In regular range use, the biggest advantage is reduced malfunction frequency compared to bulk rimfire ammunition. If your shooting sessions involve semi-automati... https://bulkammotogo.com/product/22-lr-40-gr-cprn-cci-mini-mag-0030-5000-rounds/