You can get a 3" Steel Shot barrel for the 1100. Remington used to advertise it as good for the 2-3/4" receiver with steel, but I guess they have gotten lawsuit shy of late. I have one, and used it on my 2-3/4" receiver for 20 years with no issues and good success, but I decided to "retire" my 49 year old gun to clay pigeon duty. So I bought a 'new' 3" Magnum duck gun. A cherry 1966 Model 1100 Magnum, and I put the steel shot barrel on that.
They still make 1100s, but most are Sporting Clays models starting at $1000+. Nice guns.