Best powder for 3" barrel S&W 686 .357
Normally I would go with Hodgdon H110 BUT this may be a too slow burning powder. I suspect I need a bit faster burning powder. With 3" barrel .357's being quite common I have to assume this is not new to this forum.
I'm looking to push a 158 gr. cast bullet at 38 +P velocities.
Suggestions?
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