I am just curious which grain bullet would be best suited
for Range practice ? 115 Grain Or 147 . I assume that
115 Grains would be less wear on the Gun ?
If the ammo is loaded to SAAMI specs (most major factory, US manufactured ammo is.), there should be little difference in the wear put on the gun from one load to another (unless it's +P).
My defense load is the 124 grain Hydra-shok. The 115 and 124 grain, 9mm FMJ loads have very close to the same recoil and point of impact.
For range practice sessions, I use quality, mostly US manufactured ammo. I buy whichever I can get the best price on from among these choices:
Federal American Eagle, 115 or 124 grain FMJ, NATO Ball M882.
Speer Lawman, 115 grain FMJ.
Winchester White Box, 115 grain FMJ
Fiocchi, 115 grain FMJ
I would not use any "range reloads" or lead-bullet ammo.