I'll second 500 Nitro's recomendation.

A gunsmith who is helping me reload has a standing bench rest. I am actually steadier leaning into it than when using a std bench rest when I need to hold the barrel/s as in with my DR and can't use a rear bag. Felt recoil is a fraction of what it is off a sitting bench, not really different than standing off hand.

I've been using it to develop loads on the gunsmith's premises. Load four, go shoot four, come back and add, subtract powder, start with a different bullet or powder...This leads to a heck of alot of shooting in a day and I couldn't do it with a sitting bench.

JPK