4 bore in action. The man shooting it is 5' 10" and weighed 175 lbs.
4 bore in action by
Steve Zihn, on [bleep]
2 bore.
100_1426 by
Steve Zihn, on [bleep]
100_1422 by
Steve Zihn, on [bleep]
2 Bore muzzle by
Steve Zihn, on [bleep]
This one was taken during the build. That's my hand in the picture.
If loaded to the same velocity the 2 bore will kick 4X (not 2X) harder then the 4 bore.
Looking at the 1st picture you can see why no one does that.