sell the bullets for the stuff guns and buy bullets for good guns?
If I sold 1,000 .38 bullets for 1 cap each I'd make about 1,000 caps.
However if 10mm bullets are about 7 caps each then I'd only get about
142 10mm bullets. That's not even worth it.
If I were able to deconstruct 1,000 .38 bullets I'd be able to craft around
800 10mm bullets.
Selling bullets to buy bullets doesn't make any damn sense. It would only be a logical choice if you could convince a trader to trade bullets even 1:1 not 1:7.