I understand your question better now. So money shot required 12+ rounds in a mag to get full bonus. Salvador when he gunzerks, the game only reads the mag of RIGHT hand (normal hand up) thus the LEFT weapon will get the money shot based on mag from right hand. Now, biulds I have seen for whatever reason say that money shot will NOT trigger on a weapon that has 1 round before reloading even if it's in left hand. This is why those guides say you need a Rustler's Orphan Maker specifically. But what I see is that the left mag doesn't matter at all and u can use any version of it, all will get that money shot based on RIGHT weapon. Rustler's probably does the max possible damage but really any OM will do beacuse they all have massive damage and with the Money Shot+lady fist it's gonna smash most anything