When I was in the Army (knee deep in granade pins... hey it's a tradition to start all military storys that way....)
Anyway, m-16's don't kick.... but when they attached a granade launcher under it (M-203) the light weight of the m-16 and it's thin butt.... dang that thing had some kick..... We had to fire a 12 gauge, for post interior guard duty.... I'd always heard how 12 gauges "Kicked" so I leaned into it like I would with the 203..... dang I was dissapointed.....
Ok... that was a long time ago...
I have a .50 cal Southern Mountain rifle, it's thinner butt has more "kick/ sharper push" than when I fire my .58 Enfield with it's wider buttplate......
Guess it all depends on what you'r firing.... weight, shape of the butt plate... load and alla the differences.......
Still fun tho....... :grin: