my setup is matthews ovation @ 65# & 31.5" 300cx w/125 field points. I have been shooting 125 thunderheads & I started trying 100 muzzies this week thinking maybe the shaft might be a little light for the 125s. I see little to no difference in the 125s & 100s @ 20yds which is what i am working on for the spring bear hunt I will be on. My impact point w/fieldpoints is dead on. With the broadheads it is about 3" right & a little low. I could adjust sights to compensate, but it just seems to me like you should be able to set on dead on for both field points & broadheads. I always have in the past.