Sometimes you just don't know what you don't know. At one time I didn't know it either. After seeing how much difference there can be from bow to bow and field tip to broadhead I wouldn't ever want to go without sighting in broadheads. When I played baseball in college several of us shot bows at the apartments we lived at. One buddy had tried some new broadheads that were the latest thing. When he shot them the arrow was doing flips. He couldn't even get close. He ended up going another route. I also took a guy from church with me once and he had a doe come right in and just completely misses. After we're done I asked him if he had tuned for his broadheads. He had never even shot them at his target or realized he had to. I hunt with crossbows now and don't think I've ever shot a field tip out of them.