So I am interested in members experience with primers in 280AI. At this point the common answer may be whatever you can find. I’ve got a brick of CCI BR2, Fed 215M, and several sleeves of other LR primers in Win, Rem, and CCI. My Fed 210M supply is not worth starting load development and finding a brick is near impossible. The BR2 would be the least problematic to use as the Fed 215M are slated for my magnum cartridges. Likely powders will be H4831sc, H4350, and H1000 depending on pill loaded.