Quote:
I loaded 20 of each bullet with 24.0 grs H335 and OAL of 2.200 and 20 of each bullet with 24.9 of H335 with OAL of 2.250.
They all grouped about the same, how could they all group about the same with that much difference in powder and OAL ?
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Not that my way is the best way but when doing load work up I only make one change at a time. I will load a few different powder charges all with the same OAL. Then when I find the most accurate I will play with the OAL to see if I can improve it even more. When making more than one change at a time you won't know which one affected the change when there is one. Have fun and nice groups.