I'll be danged if I can see any diff in killing power between a 28 and the 20 with standard length shells....if anything the 28 seems to fold up birds with more authority.....and I know , that observation is not logical .
there is a difference if you consider 3" 20 ammo , but they are nasty kickers in a light 20 double .
my conclution, I like the 28 better , and if I need 1 1/4 of shot , I'd rather shoot it out of a 12 than a 3" 20 .
