It really depends if you're shooting sitting down or standing up. If you're shooting slugs/buckshot while sitting, it's going to hurt no matter what setup you have. If you're standing, your body absorbs a lot less of the recoil...and the R3 pad will help even more. While standing, it is not terribly uncomfortable shooting slugs/buckshot through my 870 with the R3 pad...I'm 5'11" and 210 pounds...for someone smaller, YMMV.