Staball is not temperature stable. I ran a test in the 25 creedmoore using Peterson SRP brass, 131g blackjack bullets and both cci 400 and 450 primers through a 28” Bartlein suppressed.
I will choose one specific loading to present however this pattern marched out throughout the testing of an entire ladder test
On day one the temperature was 61 F.
Staball 44.6g 3029 fps with SD 9 (3 shots) cci 450
Day two the temperature was 41 F.
Staball 44.6g 3006 fps with SD 8 (5 shots) cci 450
Staball 44.6g 3004 fps with SD 10 (3 shots) cci 400
that is a 1.2 FPS difference per degree F
I will choose one specific loading to present however this pattern marched out throughout the testing of an entire ladder test
On day one the temperature was 61 F.
Staball 44.6g 3029 fps with SD 9 (3 shots) cci 450
Day two the temperature was 41 F.
Staball 44.6g 3006 fps with SD 8 (5 shots) cci 450
Staball 44.6g 3004 fps with SD 10 (3 shots) cci 400
that is a 1.2 FPS difference per degree F
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