Misfire on Homeloads

[Milligan]

Not true. You can over seat a primer. Been there, done it, had the ones that didn't go bang.
It doesn't just got the bottom, the edge of the primer rolls over and locks the anvil.

I wish I had photos to show some of the things that I see at the range. One being a box of factory ammo where two rounds dint let loose. After checking the rest it was noticed a couple with primers a little deeper. Put them in and tried firing, they did not fire. Tried and tried again but wouldn't fire. Nothing at all wrong inside the case, there was powder and a primer hole. How ever, the priemers was well dented, just the same as op photo.

I bet you the op loaded the round again and tried to fire it at least one more time.

Dude. Refiring isn't generally a great idea, they tend to pierce and if they do let go it can be quite lively.

 

[activeviii]

I still bet he did try to lol

Dude. Refiring isn't generally a great idea, they tend to pierce and if they do let go it can be quite lively.

 

[deeangeo]

How can you seat a primer "too deep"? Are your primer pockets deeper than standard? If not, they will stop when they hit the bottom of the primer pocket and hence be correctly seated.-JMS

It is possible to seat a primer too deep.it's done by pressing the primer too hard when seating it and squashing the anvil. Effectively, this 'deep seats' the primer and is undesirable.
Primer seating should be 'felt' and when correctly seated are usually two or three thou below the case head, the anvil will be on the pocket base over the flash hole.

 

[Saracen666]

Using the wrong size primer seater can also cause misfires.

 

[western woodsman]

I had a misfire one time while stalking, luckily the beast was down, and I was only trying to finish him off, but I had to wait a good thirty seconds at least to chamber another round. I have come to believe that this was caused by the primer not being seated quite to full depth, and the whole primer moving upon being struck so not smacking the primer to the anvil quite hard enough. I have since bought and regularly use a primer pocket uniformer on all my brass as a separate prep operation, and I have not had any misfires. SO I think it is the opposite of being seated too deep.