This video details a temperature sensitivity test for Winchester StaBALL 6.5 powder, comparing it against Hodgdon H4350, Hodgdon H414, and Alliant Reloader 17 in 6.5 Creedmoor. The test involved shooting five rounds cold (around 32°F) and five rounds hot (around 120°F) for each powder to measure velocity changes. Winchester claims StaBALL 6.5 is the world's first temperature-stable ball powder, and the results suggest it performs significantly better than H414 and Reloader 17 in terms of temperature insensitivity, though H4350 remains the benchmark.
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