FireArms

The usual bullet weights for 9mm Luger range from 115 to 147 grains

There are 7000 grains in an Avoirdupois pound.

Federal Premium Personal Defense Ammunition 9mm Luger 124 Grain HST Jacketed Hollow Point. ... One of the great things about this ammunition are high quality features that make this ammunition perfect choice for self-defense ammunition.

The Atlanta Arms 115-grain JHP and FMJ loadings and the Nosler 115-grain JHP ammo were the most consistently accurate match ammunition. The Browning Performance Target 147-grain FMJ load easily stole the show with the best 10-shot average of the 12 loads tested.Oct 3, 2017

ammunition strike at the same point of aim

the heavier projectile will produce more recoil, heavier bullets can rarely be driven to the same velocity as lighter bullets. The recoil momentum available is bullet weight times muzzle velocity. So 200 grains at 1000 ft/s is the same 300 grains at 667 ft/s

The recoil momentum available is bullet weight times muzzle velocity

BW X MV=recoil Momentum

Automatic Colt Pistols

40 caliber smith and wesson

45 GLOCK AUTOMATIC PISTOL

Sig company