lemoyne

There are ways you can determine that for your particular bow. For instance if you "0" exactly 4 inches high at 8 to 10 yards a150# strait bow will be shooting about 200 fps and will be dead on at 20 yds a 300fps bow will be dead on at 26-27 yds. This is the way all 3 of mine are sighted insince most of my shots are between 15 and 30 yds I use a regular 2 power rifle scope and know it is 2 inhes high at 15 yds and 2 inches low at 30yds [10 point and exocet 300fps] the other is an old barnett 150 pound strait bow xbow and I normally use it only forbowfishing and froging. Lee