Thread: WHY do we resize shotgun Hulls when reloading ?

maybe because the brass on shotgun hull is so much thinner.....and tolerances are looser,eg a rifle cartridge is held firmer..... pretty sure if you using break open gun you WONT have to worry about it...I didnt with single barrel...3 types...the SxS but with the u/o the top barrel was fine,bottom a bit fussy as they often are.first round in pump was ok,but fed from mag needed good crimp etc.