"Are you actually telling me with a straight face that a gun fired with 100 rounds of UMC ball requires more cleaning than one that was fired with 100 rounds of lead-bullet reloads?"
In order to fall off the turnip truck, you've got to climb into it first, Sarge.
That's EXACTLY what I'm telling you.
The lead-bullet Rem-UMC ammo that I've fired has uniformly given me ENORMOUS leading problems -- the bullets are just too damned soft.
My lead bullet reloads, on the other hand, use QUALITY hard-cast, lubed bullets.
Since early 1999, I've put around 3,000 lead bullet reloads through my S&W Model 19 4", and haven't cleaned it yet. There's no lead in the bore, and while there's sooting, it's not nearly as bad as that caused by 100 rounds of Rem-UMC .38 Spl. lead 158-gr. loads I fired through it some years before that.
I've put a lesser number of my reloads through my Model 28 6", probably in the 1,500 range. Again, no leading in the bore, no undue deposits of unburned powder, no thick, nasty, greasy sooty fouling like that to be found with Rem UMC lead bullet loads.
The .45 ACP and 9mm stuff is, in my experience, also dirtier than any other commercially available new ammo.
A friend quit using the .223 REM-UMC ammo in his AR because it fouled the gas system so badly.
Thanks but no thanks. I'll spend a little extra money and buy Winchester.