If you have access to a chrono I would suggest firing those loads across it. Those few thousandths difference must have been giving you a better seal, resulting in a higher velocity, which could also account for the different point of impact.
PS; I will go back & dig out my Jan AR & read that article. It is well noted though the AR is sorta like the "Ol Gray Mare, She Ain't What She Useter Be" (Todays AR has a lot less Wheat but a lot more Chaff).
Just this past issue in "I Have This Old Gun" I read that the L C Smith was the ""ONLY"" sidelock hammerless ever built in America. I e-mailed them & told them just off the top of my head without further research I could give them 3 more; Baker, A J Aubry & Crescent.
Will be interesting to see if they actually ""Confirmed"" those lesened recoil claims or just ""Repeated"" them.

Last edited by 2-piper; 04/15/10 08:44 AM.

Miller/TN
I Didn't Say Everything I Said, Yogi Berra