sjumper Ive never triedthat. I usually try 3 or 4 dif powder loads with the bullet I like and usuallyits a pretty obivious between the difference in the groups accuracy and velocity differences on the chrony. Then I work on where I have the bullet seated and shoot many groups from there. If 2 or 3 powders are close I usually go with the fastest load.

Once I finally mess around some more and get the bullet seated where I like, then I usually re-shoot some groups at different usually longer yardages to see what it can do. I usually shoot whatever load I decide a bunch of times on different days and for the most part this has worked for me.

Do you mean try the exact same load on the same day just back to back in different 4 shot(orhowervermany)groups or keep shooting the same load over and over at same target. I understand that a good group one day does mean the same load will be a good group the next day.