I have got the same thing with a wood stock, it has a Vari-x 2 3-9 power. I couldn't shoot it without flinching with the factory recoil pad, so I bought a Limbsaver and WOW. Good fit and made a world of difference. I can shoot 210 Barnes XLC bullets with 78 gr RL22 @ 2890FPS and they don't hurt. I personally have to shoot 4-5 rounds through it before I begin to settle down and I actually become more accurate the more I shoot it...to a point. No BOSS but I am thinking about a Muzzle Brake
to tame it a little more but I have a Mercury Tube that I am going to install this winter to see how it helps.
Sorry I haven't sat down and done a real range test but it is winter and I will have nothing to do....