So, 2208 was a fail with the 53gr Vmax as suspected.
31gr and 32gr gave the better groups, but the velocities were to slow, 3120 and 3160. Even the 34gr load only gave 3250fps. To be worth the effort, I need to see a significant improvement from a 223 Rem (when this rifle was 223 Rem the 53gr were doing 3260fps with 26gr of BM2)
Narrow, long powder column maybe isn't as good for the slower powder and the light bullet. Any ideals of which powder for the heavier 68gr bullet?
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