WC820 (PD) Lot 50272 357 Mag Loads - Range Report
© 2014 – Thomas C. Dugas
Projectile: Hensley & Gibbs #51 Gas Check, Tumble Lubed (Loaded as cast) with Lee Liquid Alox, Pressed on Hornady Gas Checks. Rounds were run through a Lee Carbide Factory Crimp & Sizing die at the last step. Average weight with gas check and LLA ~159 grains ~.
Powder: Surplus WC820 Pull Down (PD) Lot 50272
Notes: Loads were 14.0 grains of powder, 14.5, and 15.0. Both 14.5 and 15.0 indicated high pressure signs by flat primers (no ridge flow, but evenly flat) and intermittent sticky extraction. 14.0 had flat primers with easy extraction.
My working safe maximum load is: 14.0 Grains of WC820PD Lot 50272 with the Hensley & Gibbs #51GC projectile (Heavy crimp). Primers were Winchester Small Pistol Magnum. Cases were 1X Fired R-P Brass cases (same lot).
Weapon: Smith & Wesson Model 27-2, 5 Inch Barrel.
Range: 10 Yards, Standing
Date: December 2010
Best load was with 14.5 grains (1.338”) of WC820PD Lot 50272. Higher charges had poorer groupings at 10, 15, and 20 yards.
Targets: [Squares are 1 inch]
14.5 Grains of WC820PD:
15.0 Grains of WC820PD: (HOT LOAD DO NOT EXCEED – NOT RECOMMENDED)