Thanks everyone for the information. I'm going to start by using only these spitfire TMZ bullets because I have 48. I'm going to start at 80 grains and go up from there until I figure out the sweet spot. I'm going to try the cheddite primers as I've heard they are hot and should give reliable ignition. The "spot on" app with that scope gives you lots of virtual data to work with. I intend to shoot cold clean barrel for each shot and use a chrony....Range report will follow.