Hi, Regarding hook and slice when shooting golf balls, I took the mortar to the lake today to see just how far it would throw one without deviation from line of fire. Tried weighed powder charges of 100, 150, 200, 300, and 400 grains of FFG. There was no noticeable deviation from straight at any charge. I did find they went a LOT further than I would have thought. Now I've got to get some of the hollow balls, drill them and fill with bird shot and epoxy the hole closed. Be interesting to see how far those go.