Hmm... fired the rest of them yet?
I doubt the consequences will be disastrous, probably the primer will just blow itself out.
Here's an idea... do you still have the one with no hole? Load it up and fire it
very carefully, wear a welding mask if need be... just to see what to expect if any of the others are defective. At least you'll be ready for it, rather than it happening at random.
If the results are undesirable, better to unload them all and check them.
Meanwhile, here's a pic of my little helper:
