Shoot what your gun likes. I tried a bunch before I settled a reduced recoil Remington copper solids. I guess in the end I figured that so many guys are swearing by the 20g I should be just fine with a easier kicking 12g.My 11/87 was a little picky and frankly I am not a big fan of 12g 3 inch slugs. They beat the pulp out of me and make the .308 look like .22
when it comes to recoil.