I think it would be interesting to shoot the same rifle off a combination of different set ups and see if there was much of a difference in group sizes.

The bench rest crowd seems to run off the leather/sand..but these are heavy, flat bottom rigs that basically slide back and bounce very little in free recoil. A 6PPC in a 14LB gun moves very little!

So, soft baggers, do you get itty bitty groups with your light and sporter weight guns? That big Caldwell with the 4 sections looks good to me and supports a lot of the forend.