I have been reloading for about 10 years, but I’ve only been casting for about a year.
I have had my first squib with my cast bullets. I assumed I had skipped putting powder in, so I modified my loading sequence to eliminate brain dead repetitive habits. I was shocked to get another scrub. I have never had one until I started loading cast bullets.
I tumble lube with Lee Alox/JPW/MS. Is it possible that the lube is contaminating the powder and causing squibs? The last squib was barely a pop. It seemed the primer was possibly contaminated too.
And finally, if these are the result of lube contamination, what are your precautions? I am a slow revolver shooter. But it still concerns me. I have not had any similar errors until I started loading my own cast bullets. If anything, I have been more attentive since then.