I have been using the CCI #41 primer and H335 to load my .223 for an AR. The price of the CCI #41 is over $6 per thousand higher than the CCI Small Rifle Magnum. I read some people say you should use the #41 because of the harder cup. Has anyone using the non CCI #41 had any issues/slam fires when just target shooting or doing some plinking? Thanks for sharing your experiences.