The lighter gun will hurt you as far as shoulder goes
Many falsely assume the 10-gauge kicks like a mule. On the contrary, at a weight of 11 pounds, it’s actually more manageable than most of today’s 7-pound, 12-gauges when firing 3½-inch shells.
If they killed less than you did I think you best get them out shooting some clays since they probally cannot hit the side of a barn or have never patterned their guns
We don't have the geese dropping their feet in front of us 20 yards out like you guys do in Ontario and PEI when I hunted there
When I do get in those situations I am the last to shoot and normally the 1st shot is like 35 plus yards if not we can make instant hamburger
However most of our goose shooting here is pass shooting and a nice shot in 40 yards or we hunt sea ducks so you need every advantage you legally can use
Know all about the older part

which is why my deer gun is now a 243 vs a 3006 or 7mm, But all honestly the 10ga semi's are no problem with respect to recoil
Cheers