Me thinks he's referencing splitting hairs, in this case a Red C**t Hair, the tiniest unit of measurement known to engineering science.
And for the OP, a GP100 in 41 Special does 220-230 gr lead at 1200.
Another vote for the .41Spl, and the GP100 is the perfect platform.
If the that doesn't appeal to the OP, how about a .38-40 loaded a little stiffer?
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