I took my new Savage 220F out last weekend and the accuracy was not as good as I hoped for (best 3 shot group at 100 yd was 3-4"). I tried several types of ammo, but a 3-4" group is as good as I got. Has anyone tried a Limbsaver barrel de-resonator on a slug gun and does it help improve the accuracy? Since it is a shotgun, I assume I would need to use the bull barrel version. I have one on my Savage .270wsm and it seems to help that gun, but I have never seen anyone try it on a slug gun.