My only complaint with my pair of foundation centurions, they're very butt heavy. Im running hawkhill competition contour 28" barrels with tuners/brakes. With my Ckyepod on the arca to get my preferred balance I had to add more brass weights to forend. My rigs are 23-24# balanced the way I like em. Pretty heavy for quick mobility. I believe some guys have taken the butt stocks to a mill and hollowed them out a bit to reduce rear weight. I should be receiving a few xlr envy pro jv chassis here soon and will tune the balance on them, hope to back down to 20#.