There is a limit for sure. There is no kind of a stop, you need to know what the specs are for your make and model of bow. If you back the threads out so far that there is not enough to hold on at full draw it's going to hurt, BAD when they let loose. Not to mention it will most likley ruin your risor from the bolts stripping the holes out.

Most bows are around 4 or five turns from the bottomed out position. My bowtech however is only 2 1/2 turns. Had I not read that in the manual I would have lost the limbs trying to turn the weight down.

Paul