Had a Christmas get together this evening and was showing my new 12 ga USH to some friends. The question came up that the gun was like a .72 caliber rifle and did they have bullets for them. I have a couple of old 12 ga. brass cases loaded with buckshot and was wondering if anyone loaded or reloaded brass with slugs(sabots or foster)? I did see where someone is using a 20 ga. cartridge with a 720 grn bullet but it did not look like a slug.