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I am now reloading some new cartridges for the snub. I will use the results to compare with the original velocities that prompted this thread in the first place.
Here are the loads:
4.9, 5.1 and 5.2gr of N320 seated to 35.5mm (1mm down from 36.5mm OAL), half turn crimp.
4.9, 5.1 and 5.2gr of N320 seated to 36mm (0.5mm down from 36.5mm OAL), half turn crimp.
4.9, 5.1, 5.2 and 5.3gr of N320 seated to 36.5mm, but with three quarter turn crimp (extra 1/4 turn crimp).
And finally,
4.5, 4.7, 4.9 and 5.1 of N320 seated to 36.5mm, half turn crimp but magnum primers.
3 shots of each over the chrono.
I don't know if 0.5mm increments in seating depth are too small. I hope not because metering those charges out took ages! I just didn't want to over-strain my little snub. It is not a hefty gun.
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Last edited by Pond, James Pond; January 26, 2014 at 07:40 AM.
Reason: change to actual figures
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