Sean, I appreciate you looking at the OCW webpage. If you don't want to read through the theory, just go right to the OCW load development instructions on page one, print them off and do a round robin test. Here is a piece I wrote on the "scatter group," and its significance during OCW load development--and also the effect of the scatter group on a conventional ladder test: http://snipersparadise.com/snipercha...howtopic=13860
Also, I think if you'll read over some of the posts and look at the target photos in the Handloading and OCW section here--> http://practicalrifler.6.forumer.com/
...things will begin to make more sense.
Roy, thanks for the encouragement. [img]/ubbthreads/images/graemlins/smile.gif[/img] And by the way, the front of my Chrony looks just like yours! I did that with RL22 in a 6.5 x 55 Swede... the chronograph was ten feet from the muzzle. I asked the Chrony folks about the issue and they advised me to place the chronograph 15 feet from the muzzle for cartridges which exceed 3000 fps (true, the Swede wasn't going anywhere near 3000)... just an inefficient powder burn...