Thread: Powder equivalents, AR2213sc and H4831sc.

Nah you must have cut 3 inches off your barrel by mistake.
Actually this is the exact reason that you need to reduce loads and work up when you change powders / lots.

Imagine if you had been loading the slower powder at a maximum and changed to the one that gives higher Velocity.

Did you shoot both loads on the same day and at the same conditions? Could be a reason for difference
Was one loaded and fired in the winter and the other in the summer? Could also be a reason for the difference.
All just guess work really