Thread: Trap loads for semiautos

The M2 owners manual states 12 ga. guns require ammo producing at least 230 kgm for proper cycling.

Did a quick search but can't see how to convert ammo ballistics to kgm?

In my M2 I stick to higher velocity 1250/1300 fps, 28 gram loads for target shooting. As you say, the pressure curve of some lighter shells may not be suited to the inertia action.