Lead-sleds are fine so long as you don't use any lead!

Adjustable elevation front pad, and the pad at the rear reduces felt recoil to the shoulder without unduly stressing the stock.

At our local shooting range we have a small bench clamped to a post, height adjustable, to facilitate stand-up shooting for the big stuff. Still needs bags or the unweighted lead-sled, so there will be a Mk.II when we get around to it.