You know the more I think of it, the more I realize that if you set your expectations as to accuracy you would like, ( MOA ) from the Rifle/ Bullet/ Load/ Scope Combo ,and terminal performance you need on the game, and you actually achieve that almost perfect result , and log all your data, and save and date all your targets, then the Experiment is over. After that you're just having fun shooting and trying other stuff and comparing it to your already achieved perfect load. For my East Coat Deer Rifle, Ultralight, in 270 Win, that load development was done 10 or 12 years ago, never changing it . Now my Savage Target gun with the Mc Millian factory Stock, in 308, I keep bouncing between Hornady 110 Grn and Berger 115 Grn Target back and forth. makes me nuts, because I can shoot one bullet so well at two or three range session and screw it up in a match, then try the other and it shoots so well at range sessions and not so good in the match. I have come to the conclusion; I just can't shoot in a match!!!!!! I think I'll take up Golf or Pickle ball. But keep deer hunting !!!