Once again, it's the water that does the work. Hydrogen peroxide is mostly water. T Stoff is not. It's concentrated hydrogen peroxide till it's unstable. The Nazis used it in their rocket motors. You don't want to go there.
A colloidal suspension of Ballistol in water is all you need or want to clean guns that have shot Holy Black. If yer shootin some kiss yer sister sub/replica powder, read the can. The instructions supplied by any responsible manufacturer will get yer guns clean enuf for them.
Welcome to the smokey side.
DD-MDA