Probably the ammo.
Might be .. I was using WWB a few weeks ago with no issues. I was using Remington UPC 115grn FMJ. I wonder if the rounds aren't hot enough to extract??Probably the ammo.
Yes Sir... Clean all my pistols with Ballistol after every trip to the range. I make sure all my guns are properly cleaned and oiled.Was the pistol cleaned and oiled properly before shooting it?