Wondering if anybody has experience or knowledge of a 9x19 based .308 caliber that fits standard 9x19 pistols/mags. Just contemplating options at this point. Could start with molded lead bullets; Lehigh makes one suitable bullet (Xtreme Cavitator 85gr) intended for .30 carbine. I want a bottleneck cartridge. I'll probably just go with .357 sig; but, this option still interests me.