Wanted to get a large batch of .38 158gr round nose done. I checked my powder stock and decided on Unique (had a couple of pounds). Chart lists disk 43 which should equal 4.0gr (max load listed is 4.3). I ran 20 cases through it while checking for weight consistency and it varied between 3.7gr and 3.8. This is below the starting weight of 4.0gr so I decided to move up to disk 49 and see what weight it would throw consistently. 20 more cases and 3.8 - 4.0. Next one I tried was 53 and it was throwing 4.4 - 4.5 (too much). I gave up on Unique through the auto disk and switched over to Bullseye. Recommended disk is 37 which throws 3.5gr and it did 22 cases in a row without variation (impressive). Definitely an issue with the flake powder through the auto disk as opposed to the granular Bullseye powder. I will probably use the Unique for .357 which will require a larger amount and may work out better.
Need to feed the S&W 686 this weekend...
Need to feed the S&W 686 this weekend...