9 mmUndersized die

[Robin]

I found a sizer de-capper die, it says its a Lee 9mm undersize die set. Description says .003 undersize. I have never seen this before, is it a standard die? price is almost realistic!!!!
Robin

 

[Varmint]

My pop had one...probably for sizing brass that went through a fully automatic...usually gets the bulge because of a generous feed ramp. How old is the sizer?

 

[thegatman]

lee bulgebuster does the same thing for 10 mm. Sometimes gets the brass back to normal after running thru a Glock with unsupported barrel.

 

[squib]

Good die to buy. If you size the brass smaller it will fit probably fit 99%of the chambers including match.

 

[Varmint]

lee bulgebuster does the same thing for 10 mm. Sometimes gets the brass back to normal after running thru a Glock with unsupported barrel.

My delta elite fucks the brass beyond saving...hell of a deer round in the brush

 

[Robin]

Well, I went ahead and bought it, so I'll find out. I cannot believe the gouging going on out there in the reloading world! I paid $36.00 for it and that is probably at least a third more than it should cost, but I have seen sets for four times the normal price, and go back to look again and they are gone. This situation still does not make sense to me.
Robin

 

[Deplorable Me]

Ya learn something new every day. Can you post link to source?

 

[gun_slinger_boy]

I have one in 9mm and 45 ACP. They size down just a bit further down on the base than a normal die. They're used by alot of competition shooters to give a little bit of extra reliability with the ammo and are very good for tight chambered guns. The little bit extra that it goes down on the base of the brass is the only difference and will serve you well.

 

[Robin]

One of the hundreds of sites I scanned through in my search sent me to Amazon, of all places! It was prime and should be here in a few days. I'm a bit leery, but I shall see.
Robin

 

[repete]

One of the hundreds of sites I scanned through in my search sent me to Amazon, of all places! It was prime and should be here in a few days. I'm a bit leery, but I shall see.
Robin

If you don't like it shoot me a message

 

[squib]

I have one in 9mm and 45 ACP. They size down just a bit further down on the base than a normal die. They're used by alot of competition shooters to give a little bit of extra reliability with the ammo and are very good for tight chambered guns. The little bit extra that it goes down on the base of the brass is the only difference and will serve you well.

Yes, it's basically a small base die for pistol calibers.

 

[togmaster]

I don't really understand the need for this die other than bulge busting (if it does that). I've loaded tens of thousands of 9mm with a standard dillon sizing die without issue. Why is this needed?

 

[Robin]

For me, It was the only thing I could find to complete a set of 9mm dies I have. I just hope it works. Now, small pistol primers, hell any primers.
Anyone ever use small rifle primers in pistol loadings?
Robin

 

[gun_slinger_boy]

For me, It was the only thing I could find to complete a set of 9mm dies I have. I just hope it works. Now, small pistol primers, hell any primers.
Anyone ever use small rifle primers in pistol loadings?
Robin

There's really no reason to think the dies won't work. I don't know why everyone is getting so worked up lol. A small base aka undersized die is identical to a normal die except it goes a hair further down on the case when you do a sizing. You'll also be fine to use a rifle primers in a pistol case. There are a ton of videos investigating this very thing. As far as I can tell the main difference between pistol and rifle primers is cup hardness. The rifle being harder for obvious reasons. If you're really worried about it you can load down 10% from the minimum charge and see if it makes a difference. Then work up from there.

 

[Robin]

Thanks gunslinger, I was thinking along those lines, but its' nice to hear it from someplace outside my head.
Robin

 

[repete]

What GSB said, I'd load up a couple dozen and make sure they all fire. I've used SPP in .35 Rem. in a TC Contender because the SRP sometimes failed to fire.