from 147 to 124. I currently carry Fed. HST LE 147 +p. I practice with Fed American Eagle 147. I think that the 147 HST +p is a real solid load, but I am tempted to switch to the Speer 124 +p bonded GD. The Energy is better by about 100 ft lbs. And the velocity is quite a bit faster too. I really like the numbers on the Speer 124 +p+, but I have heard that my G17 wont appreciate that over time. However, I don't shoot my carry ammo often anyways. I shoot the same weight practice ammo to match the weight of what I carry. I ordered 500 rounds of the 147 HST 2 years ago and I still have 7 boxes left. Maybe the Speer +p+ would be OK as carry-only ammo. What do y'all think.