Hey all,
I have doing OCW's for my 30-06. So far I have completed the initial tests for 150, 165 and 180 SGK SPBT using RE15, RE19, RE22 and Varget. I have used On Target to plot my groups and I am trying to interprete the data. This is where I think I am lacking. According to what I have read on Dan Newberry's site, I am to look for a 3 groups that have the same approximate group center and the OCW should be the one in the middle and that would be the load to further develope.
My questions are as follows.
- I have several tests that have more than 3 groups with close approximate centers. In that case what would be the OCW?
- What is an acceptable approximation when comparing centers? 1/8" 1/4" 1/2"?
- I have read from quite a few sources that 3 shots are not statisically enough to determine a good grouping, 5-7 have been recommended. How many shots do you use?
- My goal is to work up a accurate and repeatable hunting load. So am I wasting time, money and materials making multiple loads on the light end as instructed? Or should I only load the light end in singles to check for adverse pressure and use the loads that have the desired velocity and KE for the OCW?
- Do you even use the OCW or ladder method, or do you pick a load soley on velocity and KE and go from there?
Any help would be greatly appreciated.
Thanks in advance!
I have doing OCW's for my 30-06. So far I have completed the initial tests for 150, 165 and 180 SGK SPBT using RE15, RE19, RE22 and Varget. I have used On Target to plot my groups and I am trying to interprete the data. This is where I think I am lacking. According to what I have read on Dan Newberry's site, I am to look for a 3 groups that have the same approximate group center and the OCW should be the one in the middle and that would be the load to further develope.
My questions are as follows.
- I have several tests that have more than 3 groups with close approximate centers. In that case what would be the OCW?
- What is an acceptable approximation when comparing centers? 1/8" 1/4" 1/2"?
- I have read from quite a few sources that 3 shots are not statisically enough to determine a good grouping, 5-7 have been recommended. How many shots do you use?
- My goal is to work up a accurate and repeatable hunting load. So am I wasting time, money and materials making multiple loads on the light end as instructed? Or should I only load the light end in singles to check for adverse pressure and use the loads that have the desired velocity and KE for the OCW?
- Do you even use the OCW or ladder method, or do you pick a load soley on velocity and KE and go from there?
Any help would be greatly appreciated.
Thanks in advance!