TrailBoss was extremely unpredictable and sketchy when I tried it in .32 H&R and .327 Federal.
I tried the powder in nearly everything I owned, after it was actually obtainable (for a few years, it was very difficult to find in stock).
I have a short list of cartridges where it just didn't work as intended, and I won't revisit the combination(s). The #1 spot on that list is occupied by .32 H&R / .327 Federal.
Unique, HP-38/W231, TiteGroup, Herco, and a dozen more pistol powders are better options ... and cheaper per powder charge, in some cases.
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Don't even try it. It's even worse than the internet would lead you to believe.
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