Yeah, Benchmark is very clean-burning--which also helps with copper-fouling. It's a little fast for the Swift, though, which is prrobably why you're getting some higher pressures on hot days. Even the most temp-resistant powders get a little wonky when taken out of their ideal applications.
I've had great luck in the Swift with Ramshot Hunter and 55's.
Moly is VERY different than DBC. For one thing, it reduces fouling of all kinds, rather than producing it's own. Plus, you only apply it once to the bore, and it lasts the life of the bore.
