I ALWAYS check loading blocks with flashlight
And this ^^ is why I have never had a squib - as I mentioned in post #16.
And it is also the reason why I will never go full progressive. The charged cases in a loading block where I can view the charges
one at a time under strong light (I don't use a flashlight; but I have a spotlight clamped right over my charging station). I consider this to be a - no,
THE - critical control point that I don't ever see myself forsaking. Going full progressive eliminates this critical control point. Uh-uh; not for me.
I know this isn't a post about loading processes. But to me, brass reconditioning and ammunition loading are two completely different processes. All my brass is stored in a ready to load condition. It's all cleaned inside n out, including primer pockets, and flaired.
Although I do use a Dillon progressive these days, the processes are still separate. For each cartridge, I have a reconditioning toolhead, and a loading toolhead (yes, I have a lot of toolheads). I decap/resize and flair on one tool head. Brass is tumbled clean in ss pins at this point. Then seat, taper crimp, and a final crimp (as applicable) on another toolhead.
But I still prime by hand; and most critically, charge by hand in loading blocks that I can then view before placing a bullet atop.