Normally the 12-gauge Remington hammerless doubles were chambered 2 5/8 inches, but I'm sure for a graded gun the boys at Ilion would chamber it any length the customer wanted. At the time your gun was made, their ammunition business, UMC at Bridgeport, Conn., would provide loaded 12-gauge paper shells in any length from 2 5/8 to 3 1/4 inch. Just remember that those longer shells were for more and better wadding, not a heavier load. The heaviest smokeless 12-gauge loads offered were 3 1/2 drams equiv. and 1 1/4 ounces of shot. Generally the 3 1/4 dram equiv. and 1 1/4 ounces of shot was considered a better balanced load.
