My shafts are 28 1/4" and they are about a inch past my rest. I have a 30"draw....I don't think they can be too short as long as they are spined right, way back in the days of over draws I was shooting 25" arrows with the same 30" draw legnth, however when you put your rest that far behind your riser it will seriously amplify any flaws you have in your form, grip, release etc...etc...