Montecs 100 grain. We shot this morning before the hunt. Shooting 60 and 80 yards grouping great with field tips. Switched to broad heads. Broad heads hitting 12" right. Consistent. Switched arrows switched broad heads everything. Field tips dead on broadheads 12" right @ 60 yards. Crap! First time in 5 years this has happened. Must be the rest? Paper tuning coming soon I guess. Sucks I have 3 weeks left of season and I'm doing this sighting crap again. I adjusted the rest slightly left and shot field tip. Field tip tailed bad and went way left. I put it back. I'm baffled. Must be my rest I just don't see it.