I have read here , that you should at least fire 100 rounds of self-defense ammo , to be sure about it. So instead of shooting the normal 115gr , wwb's at the range. I shot my Win SXT's 147gr jhp & my federal hydra-shok's 135gr jhp. The recoil between the wwb's & the 2 premium ammo , was significantly different. The premium ammo almost had no recoil at all. Is this just my imagination ? Has anyone shot anyof the above & noticed the significant difference in recoil ?