I loaded up some rounds using loads from Joe Brennan's "Cast Bullets for beginner and expert": Large PISTOL primers, Saeco 301 boolits (205 gr.), and 19,20 and 21 grains of 4227 respectively. Took my 1916 Oviedo in 308 (12" twist) to the range to see what these would do. Started getting smoke around the bolt after the 2nd shot, the primers were being pierced. So here's my issue: Joe B. clearly states that he uses Pistol Primers in several chapters in his book, but nowhere is it mentioned that he has this kind of a problem. I shot several rounds with Rifle Primers after the LPPs pierced, to see if there was a problem with my firing pin. Everything went fine. The primers were seated with a Lee Ergo Prime tool (as usual), and they seated flush. Has anybody else experienced this?