The cartridge is efficient without the bullet extending way into the powder charge as in the 416 Rem.

It makes maximum use of the powder charge.

I will go back to my notes and pull out some pressure and velocity data and post later. It also may be built on a standard M98 action.

I have the 416 Howell reamers also and have chambered three barrels. This cartridge works perfect in a Pre 64 M70 Winchester.

416 Rem, 400 H&H, 404 Jeffery below.

416 Howell: Ken Howell's photo on the right, my stuff on the left.

I also have a 416 Rigby.

I am not saying one is any better that the other. Just choose your favorite cartridge and build your rifle.

The inexpensive way to go, with ease of obtaining ammunition, is the 416 Remington.