I use a Horton 175.It`s consistent with the red dot scope that came on it.I put a cheap rifle scope on it and it wasn`t consistent,so back to the red dot.It cost about $300 new a few years ago.I`ve learned that crossbows will work scope mounts loose unless you use lok-tite.Fingernail polish and super glue no longer bonds like it used to,either.Just like a deer rifle,they will shake crosshairs outa whack also,on a cheap scope.My brother bought a new Excalibur that came with a scope that would not sight in.Crosshairs would move every shot.