I don't like putting even 1 BAR on Tommy rangers for that reason. Am I wrong or do the tommys ovverride the BAR when one guy dies? So everytime you lose the BAR carrier it rolls the drop chance
Pretty much, yeah. A guy with a "squad weapon" won't put it away to use a different "squad weapon", and if no-one else in the squad has a default weapon equipped, it rolls for drop chance.
In my mod, I changed the Rangers' loadout a bit to get around this problem. they have improved Garands by default, and upgrade to 2 Thompsons and 1 M2 Carbine, which fires much faster than normal.
It bugs me how similar Rangers and Paratroopers are.