Seems to me like you are awfully close to your chrono. Try moving back to 10', which is where I think the manufacturer suggests. You are .2 grains over alliant's data and are getting over 200 fps more with a barrel under 2"????? I bet the chrono is picking up your muzzle blast.
If not, I would be SHOCKED!
~NRA LIFE MEMBER~
~NRA CERTIFIED INSTRUCTOR~
Last edited by IllinoisCoyoteHunter; September 9, 2012 at 08:55 PM.