Home Forums Reloading Big Game Rifles Maybe we obsess too much

There has been quite a discussion up in the Gunwriter's forum about ES and SD. I was shooting some ladders with different powders for a 6.5 Creedmoor with 143ELD-X and I found these results interesting. While not statistically significant by any means, the following were shot at 300 yards with a range of 1.5 grains in charge weight and just over 100fps variance in velocity.


Do you think we worry about a tenth of a grain in charge weight a little too much?
Both H4831SC and Superformance will get more load development. The other 2 powders were StaBall 6.5 and IMR4350 which each gave groups of about 6 inches with the shots landing closer to POA as the velocity increased and showed no significant nodes.

Note that this rifle exceeds max velocity about 1 full grain under Hodgdon's max charge weight so the top loads will be reduced.