I am trying to develop a load for 25 Creed using 120g Partitions. I know these are not the most accurate of bullets, but they are great on game.
I loaded 3 charges 44.5, 45.0 and 45.5, five rounds each to get a starting point.
I shot them at 9:30 am and the temp was 58. I wanted to test the results again. So, I loaded up 15 more of the same charges and shot them again at 5pm. The temp was 84.
The resulting velocities showed a 100fps increase from the morning to evening shots with all powder charges. Nothing else about the brass or reloading process changed. The rounds went from being pressure safe to leaving slight extractor marks for the top load, 45.5.
I do not know if 100 fps differences are normal for temp stable powders, but it rather surprised me.
Has anyone else had this experience with this powder?
I loaded 3 charges 44.5, 45.0 and 45.5, five rounds each to get a starting point.
I shot them at 9:30 am and the temp was 58. I wanted to test the results again. So, I loaded up 15 more of the same charges and shot them again at 5pm. The temp was 84.
The resulting velocities showed a 100fps increase from the morning to evening shots with all powder charges. Nothing else about the brass or reloading process changed. The rounds went from being pressure safe to leaving slight extractor marks for the top load, 45.5.
I do not know if 100 fps differences are normal for temp stable powders, but it rather surprised me.
Has anyone else had this experience with this powder?
