Today my eyes were opened up so to speak. I have an AEA 357 side lever rated at 340 fpe, at least mine is with 214gr but, at 150gr-3200psi this is max psi any more you start to lose fps,956 and 304 fpe. When you match that against my Texan .308 with 150gr 3300 psi 965fps = 310 fpe and max fpe 362.94 @ 3400 psi and adjust power wheel. both have heavy hammer springs, polished barrel and moderated. both shot with BARS boat tail slugs.