For me, step one would be to have the 1100 gone through by a competent gunsmith . Decent shot shells may also make a difference.
OTOH, my son is shooting a Benelli M2 for most things and my wife has my Winchester 1300. The big thing is to make sure that the shotgun fits the shooter, even if he Chas to get multiple shotguns. I learned this the hard way with my wife and MY. Shotgun.