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I've tried 2400 with 200-gr jacketed bullets in 10mm. The performance was distinctly inferior to Blue Dot. More interestingly, AA#9 performs significantly better than Blue Dot for such loads.
Of course, the performance and behavior of AA#9 and 2400 are very similar to each other in the larger cases of traditional magnum revolver cartridges, at pressures similar to those of 10mm. But different powders react differently to different cartridge characteristics—case capacity, case shape, caliber, barrel length, etc.—even if their burning rates in the most typical applications are similar.
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