Huntm Up,

Your bow should be fine. It' s probably a form issue, or a mental thing. If everything is great at 25 yards, it should also be great at 30 yards.

I' m not a big fan of lowering your F.O.C. when shooting broadheads, so I don' t recommend going to 100 grain tips. If you' re slightly underspined, I' d rather see you lower draw weight, shorten arrows, or get heavier spined arrows.