ORIGINAL: Cossack
Sound like you handlaod. If so then you should have a loading scale. Weigh the old bolt and let us know what you get. You may have to switch to carbons but I'm guessing there is a close-in-weight alternative that one of us is using.
I haven't used it for quite awhile. Not enough batt. to 0 out. Will pick 1 up an let you know tomorrow. Thanks