Recently took the Remington 870 out clay shooting. After about 5 shots the gun began to jam with the shell hull lodged inside the barrel. I have researched online and found that others had similar problems especially while using the winchester universal loads from walmart. I cleaned the barrel and used a bore brush on a drill to polish the portion of the barrel where the shell goes into the barrel. Do you know of any other tips or quick fixes that will help this issue other than changing brands of ammo?