take1a
I have never used the lead sled or anything like it, but I really do not think I would like something that I put the butt of the stock in them me the human slide in behind that. I really like the contact with the gun.
What I use is version of the Cabelas portable bench... i do not use the gadget of the front...
I also use under the forearm a Caldwell Rock Jr. ( I could not afford the real Rock) adjustable rest something like this Cabelas rest....
And under the butt I use a simple lead filled leather bag a rabbit eared ..