It's interesting that with different bows, your draw length will change. For example, with my BW bow, my draw length is 27 1/2". I had a Gamemaster bow for a while, and at first set it up with a clicker set to my usual draw length of 27 1/2", which I did by drawing the bow back on my bench with a special arrow I have cut for that purpose. As soon as I started shooting the bow, I knew that wasn't going to work, because I had to draw it way past my normal anchor point to get it to click. The Gamemaster has a small, narrow, hand grip, which is set forward, compared with the BW grip, so you have to draw the Gamemaster further, compared with the BW, to get to the same draw length, measured to the back of the bow. Both bows worked fine, but it convinced me that the only way you're going to know your draw length with a particular bow is to shoot that bow until you find something you're comfortable with.