I am just "a kid" so the "20ga only for wimps,women and children" applies
; I have shot 3" mag slugs out of a 12 gauge shotgun i weigh in at around 114lbs and am 5'4'', now I had fun for the first 3 SHOTS, then I felt like I had been tackled by a 350lb line backer multiple times. I also could not hit the 50yrds steel plates that are 15"x15". swtched to 20 gauge slugs and hit em every time.
Chase