Isn't that CLP stuff kind of an oil/solvent in one?
CLP stands for "clean, lubricate, protect," so yea it's pretty much all-in-one. Ever since buying it, I don't think I'll ever use Rem oil again.
The reason people shoot the bulk stuff and not the Mini Mags is because if you look at the price, the Mini Mags are considerably more. Granted they are better quality, they aren't 15 bucks for 500 rounds.
The bulk stuff will work just fine in your SR22. If you have failures to feed or eject with the shitty ammo, you can pretty much just attribute it to the ammo.