Found 9mm resized cases would not plonk

[Dudedog]

Thanks, have the MAK dies already.
Will need to look in to the bulge buster.

 

[9mmepiphany]

Just to be clear, I don't think it is worth the time to use it to "save 9mm" cases

 

[Walkalong]

Just to be clear, I don't think it is worth the time to use it to "save 9mm" cases

Agreed. Too many free ones, or cheap if you buy, and if they won't size down I figure they have been stressed more than they should have from pressure or are too soft, etc and toss them in the scrap bucket. Same goes for crimped primer 9MM these days.t

 

[Rule3]

My recent experience with 9 mm range brass shows about 20 % will not plonk after resizing. Brass is definitely once fired (saw the guy fire it) but up to 1/8 of an inch will protrude from case gauge.Some just slightly.

I think that some of this might be Glock bulge but cannot explain it any other way.

Thoughts?

A picture of the brass, gauge and you barrel is worth a 1000 speculations

Unless the brass had been loaded to extreme pressure I have not seen a 9mm GLOCK bulge a case. Heck I have a SW Shield that guppies the brass, But it is clearly viable before sizing.

 

[jmorris]

Bulge buster is a push through die that sizes the portion of the case that is normally in the shell holder/plate. Magma makes two different versions of push through sizers as well.

I have a couple case pro machines, unlike push through dies they can also clean up extractor grooves.



If you just use a barrel to “plunk test” your ammo you will likely not find defects at the bottom of cases because many do not contact the case in this area.



Then you will wonder why your pistol fails because all of your rounds plunked just fine but you never considered the fact that the round has to slide up into the breech face.



So use your barrel and whenever your pistol chokes, save the round and test it in a friends case gauge. That’s what drove me to buy my first one.

 

[LiveLife]

I wonder if the failed cases are spent 9mm Major cases that overly expand case base and are difficult to resize towards case base.

And jmorris is correct. Chambered 9mm rounds in pistol/carbine barrels only allow case above the rim inside the chamber. So even cases that fail the case gage could fully chamber in your barrel.

Just to be clear, I don't think it is worth the time to use it to "save 9mm" cases

Agreed. Too many free ones, or cheap if you buy, and if they won't size down ... toss them in the scrap bucket.

Now when I come across 9mm case that takes greater effort, I will check with tightest barrel I have and if it won't pass, I will attempt to resize again (ensuring bottom of die barely kisses the top of shellplate) but if the case fails again, it gets culled for recycling as I consider "overly expanded" as "thinning of case wall" which could mean weakened case.

Also, some members reported brass plated steel S&B cases so check them with a magnet to be sure.

Same goes for crimped primer 9MM these days.

Well, not for me as I recently bought C-H primer pocket swager and it's easy to remove the crimp - http://www.ch4d.com/products/equipment/priming-tools/psk

 

[Walkalong]

Well, not for me as I recently bought C-H primer pocket swager

Enjoy.

I have several 5 gallon buckets of 9MM brass.

 

[LiveLife]

Enjoy.

I have several 5 gallon buckets of 9MM brass.

The C-H swager was primarily bought for military crimped LC .308/5.56 brass I have been buying.

I rarely come across crimped 9mm brass anymore but if i do, I will be ready.

 

[jmorris]

I wonder if the failed cases are spent 9mm Major cases that overly expand case base and are difficult to resize towards case base.

Machineguns were what drove me to get the casepro’s before that I had to keep the stuff we fire in SMG’s separate from other stuff.

I don’t have problems with major 9 rounds expanding like that.

 

[Walkalong]

I rarely come across crimped 9mm brass anymore

Me either.

 

[cheygriz]

Steel case ammo can be reloaded.

When I first started loading, I had a case of 1000 .45 ACP U.S. military rounds. It was a matter of reload these or don't go shooting for a poor high school kid. (what fun! loading steel cases in a Lee Loader!)

These cases were loaded 3 times.

After this experience, I no longer load steel. it just isn't worth the hassle.

But the point is, yes, you can re-load them.

 

[jmorris]

Steel case ammo can be reloaded.

So can aluminum cases. There is a difference between can’t and shouldn’t.

 

[cheygriz]

Jmorris, I wouldn't go so far as to say that steel cases "shouldn't" be reloaded, but I would say that IMHO, it isn't worth the hassle.

 

[Toprudder]

I wonder how many people have reloaded the brass plated steel S&B cases and never knew it.

 

[cheygriz]

I wonder how many people have reloaded the brass plated steel S&B cases and never knew it.

Probably more than we'll ever know!

 

[sparkyv]

9mm Markrov for 9 x 19mm cases

Yup!

 

[sparkyv]

Just to be clear, I don't think it is worth the time to use it to "save 9mm" cases

Agreed. I use it to "save" loaded 9mm rounds that won't plunk.

 

[glaizinman]

I have an EMP (Well, did, gave it to my son) with a SAMMI minimum chamber (Was under until SA fixed it) and so now I check all of my sized brass with my Wilson case gauge. If it fits slips into the gauge and will fall back out of its own weight it passes and I know it will fit the EMP without locking it up. With range brass I lose 105 to 15% that way. Would they fit other barrels? yes, but I didn't know which rounds would be fired in the EMP and took no chances. I still do this even though I no longer have the pistol.

Most fail by just a little, but some would poke out an 1/8" on occasion. Fired in a loose chamber maybe. Over pressure maybe.

If it is only the rim that holds it out, it might be a burr you can clean up.

Since the 9MM is a tapered case, make sure the shell holder is just touching the die while actually sizing a case.

Old gauge I gave my son when he got the EMP.
View attachment 815792

My new gauge.
View attachment 815793

Failed case.
View attachment 815795

Walkalong
This is a little of the topic but I couldn't resist. I couldn't help noticing your case gage I use those as well. Anyway those are made in Cashmere Washington right down the road from where I live. In just a tiny little shop and a very good gunsmith used to right behind his shop. But the town of Cashmere put pressure on the gunsmith because his shop was almost on the high school grounds. Sad part the gunsmith was there first but he moved to a much better place.