Being an abesent minded kind of guy I am always worried I am going to swap powders. I am going to use a bulky powder receipe and accidentally load a dense powder. I have a Rex III low pressure sixteen gauge recipe and I use a MEC 33 powder bushing - if I remember correctly. My fear is my dumb ass is going to load Longshot by grabbing the wrong powder jar when I meant to load RexIII. When I load Longshot low pressure reloads I use a MEC 16 bushing.
Now I have a clearly marked jar for each powder but...
Best,
Mike