Grizzly,

Only the last one even comes close, if it adjust upward enough.

The one my reloading teacher/gunsmith has is a regular bench top but with adjustable legs that raise the top to a standing height. It must weigh a ton since it moves very little or not at all.

With a full size top I put my heavy front bag on top and I'm set. I'm a lefty so reverse to see how it should be. My right hand rest on the heavy bag, holding the barrels, my gut leans into the top which has a penisula so it suits either a righty or lefty, my left elbow rest on the top, with a small bag under it for elevation and abrasion issues. There is no movement of my body, arms, hand or the rifle when I am set. It would be even better if, as advised by 500 Nitro I could have some support with my right leg, but leaning into the bench top is enough.

I will try to remember to get a photo on my next reload session, which is Thurs.

JPK

BTW, you could make this standing bench for not a whole bunch since it is the top supported by steel pipes which fit inside one another for elevation adjustment. But you would have to have a place to use it.