Depends on how you set the rest up, you can get some overdraw to it. I have mine set up with 2 inches of overdraw. I have a 26 inch draw length and can shoot 23.5 inch arrows out of it. At this length the head is still over my shelf. I could probably get about another 3/4 to 1 inch out of it if I wanted to. Your set may be different though.

With my Muzzy Zero effect I could get even more. I think I shot 21 inch arrows out of it once screwing around. They didn't fly to bad either, 1714's with 5 inch feathers I think. Looked pretty strange, but didn't fly too bad, at 20 yards any way. I used them for spots a couple of times just too see what they would do.

My advice would be to not do it though. I would set the Drop Zone up as close to the shelf as you can and shoot the correct length arrow (about 3/4 to 1 inch less than your draw length). This would give you the most forgiving set up. Don't believe the hype about drop aways, hand torque can still effect your shot. And overdraws magnify hand torque. The only advantage to overdraws is to get a lighter aluminum arrow to spine correctly. With all the new arrow choices it isn't worth the trade offs in my opinion. If you want lighter arrows, just get lighter arrows. Unless you are dead set on using aluminums. And remember when using shorter arrows the spine will change so you will have to get different arrows. You can't just cut 2 or 3 inches off your current arrows. Well, you can, but they would be pretty stiff.

Just out of curiousity may I ask why you want to shoot an overdraw with shorter arrows? Not knocking you or anything, just want to know is all. I do it sometimes, but I know the ill effects and am just messing around. My set ups eventually find thier way back to the correct length arrows and the rest set up above my grip, or as close as I can get it.

Paul