I have the rra lar-8 varmint. At 200 with my loads it would jump almost a full sheet of plywood threw the scope. I made my own heavy buffer. Removed all weights and spacers and filled it with extra heavy tungsten powder, Tubbs flatwire spring and that helped some but the jp recoil eliminator put it over the top. It's the loudest thing around but as gentle as a .223 in my opinion. Now all I need to do to watch the shots appear on target is not blink. I've also shot the jp Cooley on the same rifle with the same hand loads and it is a close second to the recoil eliminator.