Sorry guys, but I establish weight/volume for the loading session, and then load all by Volume. (Harrells Culver and Schutzen measures)
Today was pistol/rifle 357 in a`92 Winchester using and 160gr MBW LeadFNGC over V-N110/15.0gr by volume (Schutzen@144.2). It varies at most ±0.1 and averages ±0.05 (a half a tenth_
As far as velocity variance, today's was 1,777fps ± 3 (Oehler35)
As others have noted, absolutely consistent throwing technique is the key, be it ball or extruded.
In my case: handle UP sharp; DOWN sharp; sharp single TAP of that handle.
I load an entire 50-rnd block at once;
Visually examine all powder levels at once;
Seat all bullets at once.
Last edited by mehavey; December 30, 2012 at 11:44 PM.