Tried Accurate No 9 powder in my S&W M28-2 357 mag. 164.5 gr lswc Seaco 382 mold. , WSPM, Starline brass. Shot rounds @ 11.5 grs, Hodgdon starting load for 158 gr. . Primer extruded into the firing pin hole. Locked action, cylinder jammed forward.
1 round at maximum 12.4 gs did it first.
After a complete gun/ammo check up, an adjustment to end shake was made with a .002" bushing. Strain screw came loose, tightened it. Head space check, OK. Firing pin protrusion measures .053"
11.2 grs No 9 still blanked the primer. Now shooting 10.6 grs. This seems to be my guns maximum?
All hand loads checked, not an ammo problem.
If your loading No 9 in 357 mag with 158 gr lswc or heavier, whats your powder charge & velocity?
Thank You.
See more photos here- https://www.thehighroad.org/index.ph...ed-action.371/