Was loading today for my 204. Like one guy on this thread, got distracted by the phone.....
A few guys mentioned double charging. I guess that's an issue for handgun loaders, but there's no way in gawd's green earth you're going to double charge a rifle load.
What you can do is forget to charge it at all. And that, my friends, is highly dangerous. I ALWAYS look into the brass before seating a bullet and then I shake the load when I'm done just to be certain sure before I put it in my ammo box.
Many moons ago, I was happily reloading some 90gr HP for a .270. They were hot loads and just disintegrated gophers. A nice summer afternoon was coming up with a pal and I was looking forward to it. Phone rang. Now, I never allowed any interruptions while reloading. Not sure why, but I went out and took the call. Came back and loaded up the rest of about 50 rnds for tomorrow.
Sooo, we're blazing away, bullshyting and having a good time the next afternoon. I'm shooting on a bipod and we're both poking at gophers 250+ yds away. I draw a careful bead on one between sips of coffee and squeeze 'er off. "click". WTF! I open the bolt and out comes a spent brass. s**t. Must be getting forgetful. Forgot to eject the last spent cartridge. There's another load in the clip looking at me. I rack it in and draw another, very careful bead on said gopher the next time he pokes his head up. Squeeze 'er off. "click". Now I'm spooked. I pull the bolt back and out comes a brass with a 90gr. HP poking out the end of it. WTF! (this time really loudly). Look down the barrel. It's black.
Here's what I did: I loaded 50 stoked rounds of 90 gr HP. I missed putting powder in exactly two of them. By chance (or a Divine nod) I chambered those two powderless rounds consecutively. And that is all that saved me from a world of hurt.
Turns out a primer will move a neck-sized bullet into the lands. Maybe a crimped bullet, too, for all I know. Then, when you pull the bolt back, it looks just like the last spent round - no powder and the primer is spent.
Moral: Missing a powder charge is a very big deal.