I love RDR2, it's one of my all time favorite games.
Having said that it really irks me when the game chooses my weapons for me.
Case in point: The mission Pouring Forth Oil.
I bring my new Lancaster repeater but it makes me use the shitty carbine repeater. I've even tried locking it away in the weapons locker but it still appears and my Lancaster is gone. It does this sort of thing in other missions too.