I use Universal in 45ACP, shooting 230gr plated bullets at 830fps or so.... basically a replicate of factory WWB or UMC loadings.
Shooting 50 WWB rounds through my full size 1911 pretty leaves visible soot along the first 1.5" of the muzzle end of my gun. Shooting 200 rounds of my reloads leaves visible soot around the first quarter inch of the muzzle. I'm very happy with the cleanliness of it.
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