I was in the Army from 1969 to 1972 as a Small Arms Repairman 45B20. The various military organizations were using the 38 Special S&W and Colt revolvers. The ammo was the above 158 gr FMJ loaded to 850 fps as indicated on the box.

Later, 1979 to 1982 I was in the I.L.A.N.G. as Security Police on the SAC base at O'Hare. We used the M15 with the 130 gr load. It was very mild and rumor had it that a bullet would stick in the barrel sometimes. I never saw that. Then we got new ammo with the pushed in bullet and star crimp. I would guess it ran at least 1000 fps and I was at least a bit more confident of it. The bullet was down almost to the tip in the case. The original load was supposed to be 3.5 grs Bullseye with what I think was the .356 38 Super 130 gr RN bullet. With the bullet down that far they may have kept the same powder charge but may have had to reduce it.