I put this together in excel to make tracking the data and doing the formulas easier. I didn't think to search here to see if somebody already posted one but if not and it's of use - here you go! The avg, es, and sd get calculated after you fill out the first velocity. The charges after the first number (2nd if you count test) get incremented by .3 for each row. I fill them out while I am doing the shooting and then file them away with my other load data.