Tried to work up a functional load for my Rem R51 using 100 gr plated bullets and HP38. Started with 4.0, worked up to 4.5 with higher load providing the least failures to eject. Lower loads felt good but caused a hang-up in nearly every mag. The gun does runs my 115's @ 4.5gr very well tho. Haven't tried the 100's in my Bersa BP9 yet but give it a go tomorrow.