Primers in Militar Brass Problem

Boomer454

Boomer454

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I was given a huge amount of 9MM brass (IVI Military) when I bought my Hi-Power a few years ago, but have a problem with it.
The guy who gave it to me had swedged the primer crimp out so the were good to go.
The problem I am having is that out of 100 rounds loaded 7-10 primers fall out when they hit the catch tray on my Dillon.
I assume that this is because the pockets were over swedged?
I have been told that if I can keep a primer in long enough to fire it that the pocket will "fire form" and be fine after that. This doesn't sound like a really good idea to me...
Has anyone had this problem?
What can be done?
 
Boomer454 said:
I was given a huge amount of 9MM brass (IVI Military) when I bought my Hi-Power a few years ago, but have a problem with it.
The guy who gave it to me had swedged the primer crimp out so the were good to go.
The problem I am having is that out of 100 rounds loaded 7-10 primers fall out when they hit the catch tray on my Dillon.
I assume that this is because the pockets were over swedged?
I have been told that if I can keep a primer in long enough to fire it that the pocket will "fire form" and be fine after that. This doesn't sound like a really good idea to me...
Has anyone had this problem?
What can be done?
Click to expand...

Don't know what you are using for primers but try Federal they are a bit bigger than Winchester.
 
Dump the brass.

If you're military, you don't want to have IVI brass hanging around, and if you're a civie, it's not worth the effort to make it shootable.

Note also that military brass is about 10% thicker than civilian brass, so your case volume will be 10% smaller, so your pressures will be 10% or more higher, resulting in a greater possibility of bad things happening.

NS
 
I am using CCI Standard small pistol primers.
As far as junking it, I have just spent 3 hours sorting all the civie stuff out. Should have enough now. The IVI stuff will be going to the scrap dealer.
I did find one coffee can full of IVI brass that hasn't had the crimp taken out yet. That has some possibilities. Anyone want it?
 
Boomer454 said:
swedged the primer crimp out so the were good to go - 7-10 primers fall out when they hit the catch tray on my Dillon.
I assume that this is because the pockets were over swedged?
Click to expand...

Boomer primer pockets only get larger as you repeatedly fire brass, not smaller. I too have a ton of I.V.I. brass, pistol and rifle, and I like it a lot. It is very durable, but like someone else stated, it has about 10% less case capacity, so load accordingly. I don't like swaging primer pockets personally, what I prefer is to use a Lee Chamfer Tool. I place the brass cases, let's use 9mm for example, on a wooden dowel inserted into my cordless drill. With the pointy end of the tool, I then ream just the crimp out of the primer pocket. This way only the crimp gets removed, and the primer pocket is unaffected. It only takes a second, and it's a one shot deal.
 
Hi-Standard said:
Boomer primer pockets only get larger as you repeatedly fire brass, not smaller. I too have a ton of I.V.I. brass, pistol and rifle, and I like it a lot. It is very durable, but like someone else stated, it has about 10% less case capacity, so load accordingly. I don't like swagging primer pockets personally, what I prefer is to use a Lee Chamfer Tool. I place the brass cases, let's use 9mm for example, on a wooden dowel inserted into my cordless drill. With the pointy end of the tool, I then ream just the crimp out of the primer pocket. This way only the crimp gets removed, and the primer pocket is unaffected. It only takes a second, and it's a one shot deal.
Click to expand...

I didn't really believe that a primer pocket could "fire form", but thought maybe it was worth asking here.
I would have preferred to trim the crimp out the way you mentioned, sounds pretty much fool proof. Unfortunately the brass was "ready to go" when I got it.
Too bad. that was a lot of free brass!
 
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