Fire rate matters, it's not a huge disadvantage, but it's there. Here are the fire rates for NC bolt actions SAS-R 1.3s Bolt 1.6s LA80 1.7s Longshot 1.8s Railjack 2.1s The fire rates are different for a reason. If you can land multiple shots, quicker, that's an advantage. Especially with the straight pull botl coming into play. With that said I think the railjack could also lose the straight pull bolt/sup options and still be viable.
Did it? It still has it in pts VR room, no sniper has access to straight pull bolt outside vr on PTS currently. I'm assuming this is a bug.