Russ Hatch
Well-Known Member
I have a ruger 77R 7mm Mauser that I'm working up loads for. I am using the OCW method of load development. I have sorted the cases by weight, turned the necks to clean them up, uniformed the primer pockets and deburred them inside. The charges are weighed on a beam scale. Cases are trimmed to the same length. Firing three shot groups through a CED 2 Cronograph at 100 yds the two best three shot groups were-
Load one Load two
Federal brass Federal brass
Hornady Amax 162 gr Moly Horady 162 grain Amax Moly
Federal 210 M Primer Federal 210 M primer
46.3 gr WW 760 48.1 gr WW 760
average speed 2497 fps 2587 fps
ES 4.0 ES 28.0
SD 2.1 SD 14.9
I am going to load up 20 rounds of each of these loads and try them to see which is better. Acuracy for three shots was about the same., Load one was .405 inch and load two was .504 inch. Does any one have any suggestions as to what I can do to improve the cases or loads that I might have missed?
Thanks
Russ
Load one Load two
Federal brass Federal brass
Hornady Amax 162 gr Moly Horady 162 grain Amax Moly
Federal 210 M Primer Federal 210 M primer
46.3 gr WW 760 48.1 gr WW 760
average speed 2497 fps 2587 fps
ES 4.0 ES 28.0
SD 2.1 SD 14.9
I am going to load up 20 rounds of each of these loads and try them to see which is better. Acuracy for three shots was about the same., Load one was .405 inch and load two was .504 inch. Does any one have any suggestions as to what I can do to improve the cases or loads that I might have missed?
Thanks
Russ