Having the range right at home has changed my load development style. It saves time of course and loading unnecessary rounds. I agree with ackleyman on the 2 shot group to begin with, especially when getting a baseline for velocity and pressure signs and grouping. If the first two shots are not close, a third, fourth or fifth will not make it any better. And if that powder won't give the speed you're looking for no need to go further either. I'm looking for a speed plateau like has been mentioned, where the groups are good at that weight and on either side of it and in the same vicinity in relation to aiming point. Load 5 of them and check it. Adjust seating depth if needed. If speeds are erratic try a different primer.
I like testing at 200 yds because that's as far as I can shoot at the house. Calm days are the hardest part, any wind will destroy varmint bullet results. Not quite as bad with long sleek target bullets.
