its not recoil, gents, its bolt thrust that will ruin this one.

Bolt thrust .. take the original proofing pressure and the surface area of the ORIGINALLY proofed case and multiply them.

then take the same measurements for the 600, and do the same

you are going to be firing OVER proof loads, every shot.

10 gauge MINIMUM starting action, and should weigh about 17LBs when done...

and you will still build the WORST PERFORMING of all the big NE rounds..

577 BPE is a great round fellas