I just found out that my Dillon powder scale is not calibrated. I calibrated it once a few months ago and never bothered to check it. Recently I’ve been getting weird results in my powder charge compared to others in the shooting community. I’m always 2-3grains behind everyone else.
I checked it today and it is confirmed that my scale has somehow, changed/moved to show a 2-3 grain discrepancy.
Pulled some of my old ammo and confirmed that I’ve been reloading my .45 ACP revolver rounds soft. It should be 3.7grs of Clays but it turned out that I was reloading them with 3.5.
Now I have over 500 rounds of wrongly loaded ammo that I need to go “waste” and properly reload them using the correct charge.
So, lesson learned. Always double check your scale.