I loaded 6 groups of rounds with different seating depths. There are four bullets in each group. I am going to the range to test them this weekend and want to limit other factors that effect the accuracy besides the seating depth. A). How long do you wait between shots or groups to reduce the effect of barrel heating on accuracy? I was thinking about a minute between shots and 10 minutes between groups, but that is not based on anything. B). How often would you clean your barrel if you were going to take 24 shots at the range? I have been cleaning my barrel around every 15 shots, as advised in the cleaning section of Lyman's reloading manual. If I clean half way through should I shoot some fowling shots before resuming the test? C). Anything besides heating and cleaning that will effect the test?