This can be a tough question! I have played with crossbows for years and one with a groove for the arrow to ride in is very hard to tune for perfect broadhead flight. It can be done but will drive you nuts. The very best was the PSE Foxfire that used a flexible arrow rest out front instead of a full length groove. I had no problem keeping 6 straight arrows, offhand, with broadheads, in a 3" apple at 40 yds. I would like to hear more from all of you about how the current crop of crossbows shoot broadheads. Do not talk about field points because all of them will shoot these.