Should I be looking at each bullet I make, not sure.
In regards to priming...
Just check the first one, and spot check after that.
I, personally, run my finger over every single primer seated with a hand primer or on any press other than a progressive. That way I can feel for defects and proper seating depth, even if I don't actually spin the case around to look at it. But, I do look at every 3rd to 5th one, mostly to make sure that no debris has made its way onto the priming ram.
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Inspecting each and every component and cartridge? Well, some people think that's a bit excessive.
...But I do it for anything being loaded on a single stage or turret press. Every case (many times, between cleaning, prepping, and loading). Every bullet. Every powder charge. Every loaded cartridge. Every crimped cartridge (separate step at my bench).
Small mistakes can have big consequences. Even if it doesn't harm
me, it may harm my firearms or even my reloading tools.
Some people prefer to just load massive quantities of ammunition and then deal with rejects or problems as they come to light, later on. (These are the guys that, later in life, have two dozen stories about the Garands that they blew up, the S&W
s that they blew up, the Rugers that they lodged bullets in, the 8 bullets that they stacked up in their Python's barrel, the shotgun that has a bulge in the chamber, and the missing finger tips.)
I prefer to take a little more time and produce quality ammunition, making sure that "mistakes" don't happen to begin with. ...But, without 'motivation', that's a hard thing to sell to people, these days.
I've had plenty. I've been a first-hand witness to 9mms exploding, .40 S&Ws exploding, .223s exceeding 130,000 psi, revolver barrels getting blown off, and incompetent morons lodging MULTIPLE bullets in the barrel before they realize that there's a problem.
I don't want it to happen to me.