As our process becomes routine, there are many pieces of knowledge we take for granted; recently I've seen some questions from new 9 Major shooters who are missing some of the basics so here are some pointers off the top of my head, please feel free to add to them, but please stick to advice for beginners so the thread doesn't get too long 1. Use a chronograph. Barrel length, barrel age, powder lot, number of holes, manufacturer, bore size, and bullet diameter will produce variations in veloc