Elcidaviator
Plinker
You’re comparing different shotguns with different fitment instead of comparing 12 vs 20ga. A true test would be same model gun, one in 20ga and one in 12ga. I can’t argue someone’s feelings or perceptions as they are non quantifiable.I'm not going to sit and argue (not suggesting that's your intent either) about it.
I've known multiple kids who had a 20g and after shooting a 12g have claimed it had less recoil. My daughter is one of them that had that experience. The point is if you have a 1 oz load at 1200 fps the only real difference you will feel is from the difference in gun weight.
Also, online recoil calculators are about worthless. Recoil is perceived differently by each individual and how well the shotgun fits them, how they hold the gun etc. IMHO, unless the gun is to be carried all day in a field, why would anyone really even consider a 20g?
It kicks more like a .410So, when I bought my brother a box of 3.5 inch 10ga shells that shoot 2oz of shot at 1350fps I should tell him it will kick like a 20ga?