24/H110/CCI-350 with a cast 262 grain Kieth SWC & a heavy crimp comes out of my 7 1/2" barreled Blackhawk at ~1350+ with a few individual shots hitting 1400 on occasion. Sorry, nothing on the shorter tubes. I've read in a couple places that H110 and W296 come from the same manufacturer, my own tests show that they give virtually identical velocities for identical loads over my old PACT chrono. Check out sixgunner.com for some good reading on this.
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