Besides using a donor action, I'm also considering the M704 for a .416 Ruger build that will be used at .404 Jeff velocities.

I'm curious to chat with anyone who is using this action for cartridges larger than .30 caliber.

TIA,

Pud

Well, I got my questions answered by a fellow who used one on a .375 H&H build.

It looks like the "BushVeld" build is a go...

My sole concern is mag box length. I think it is around 3.6”. For that length I would choose the 416 Remington.