Should be GTG, Dale.

Lil Gun is a great shorter barrel powder, and Nosler's data for that load says "18.0 min, 20.0 max" (16 inch pac-nor barrel) though at 20 grains it is a compressed load, which is why I backed off to 19.1. By my ciphering, using NATO brass anyway, that is the case "full but not compressed" point.

Believe me, even at 19.1 that load will knock the snot out of whatever you shoot with it.