First off, there is no good reason to feed a snake in a separate tub. Pet stores often do that because they often co-habitate their snakes to save space, but handling a snake is stressful to them: snakes, even c/b ones, are still wild animals that depend on their instincts, & the only thing that picks them up in the wild is a predator about to EAT them. Fear is not an appetite stimulent...
I know the tired old reason for doing this, but it's bunk: you're more likely to get bit by handling a hungry snake (confusing your warm & wiggling hand for food) or when you try to return him to his home (snakes stay in feed mode- ready to bite any reasonable facsimile, for hours or even a day or longer). Please lose this practice...BPs are SHY snakes that need all the help they can get to feel brave enough to grab their prey.
I cannot speak to the size of his prey, since I have neither his size/wt. nor that of his prey, but off-hand I'd say don't offer again for 2 weeks. Larger prey takes longer to digest.