My sons 20 gauge, he has shot low brass shells for clay birds etc.. then we went squirrel hunting , I snuck in a high brass #4 , he noticed no difference. Then when I was patterning it for turkey, I used one of the heavy 13 3" #6 heavy shot. My goodness that thing racked me hard, thought I broke my cheek. I know fit is the issue for me, but what a way to set him back if that happens to him. My question is... high brass 2 3/4" 1 oz 1200fps federals, no problem, the heavy shot was 3" 1 1/4 oz 1090 fps. why so much more recoil? the pattern of the heavy shot is 5 times better that the federals. but they pack a wollop. so would another ammo type other then heavy meatal, like winchester xx turkey loads 3" 1200 fps 1 1/8 oz be the same recoiul as heavy metal or more like the federals?