| Posted: Sat May 14th, 2005 06:09 PM |
|
1st Post |
Raymond
HB Full Member
| Joined: | Wed Apr 20th, 2005 |
| Location: | Des Moines, Iowa USA |
| Posts: | 8 |
| Photo: | | | Are you a handloader?: | | | Favorite type of cartridge to load?: | | | My favorite chambering is:: | |
| Status: |
Offline
|
back to top
|
I load for a 10mm. Some of my cases have been coming out with a buldge at the base of the case after firing. Is that due to excessive crimp?
I use Lee carbide dies. Set of three. Should I use a factory crimp instead of the bullet seating/crimp die?
Thanks for your time fellas,
Raymond
|
| Posted: Sat May 14th, 2005 09:41 PM |
|
2nd Post |
bea175
Board Founder
| Joined: | Sun Feb 13th, 2005 |
| Location: | Kingsport & Graysontown, VA, Tennessee USA |
| Posts: | 2232 |
| Photo: | [Download] | | Are you a handloader?: | Yes | | Favorite type of cartridge to load?: | I load everything! | | My favorite chambering is:: | 270 Win ... |
| Status: |
Offline
|
back to top
|
It sound like the barrel has been over throated and the case isn't fully supported at the rim when it is fired. This is common in some auto pistols. 
____________________
 
|
| Posted: Sun May 15th, 2005 01:55 AM |
|
3rd Post |
drinks
HB certified Master Handloading and Ballistics advisor
| Joined: | Sun Feb 6th, 2005 |
| Location: | Trinity, Texas USA |
| Posts: | 619 |
| Photo: | | | Are you a handloader?: | | | Favorite type of cartridge to load?: | | | My favorite chambering is:: | |
| Status: |
Offline
|
back to top
|
Raymond;
Are you shooting a Glock?
The Glock and some other makes have a good size gap in the chamber and let the case expand into the space.
I found out about this when some .40 once fired cases I bought for a project looked like they were pregnant, about 30% of the 500 cases.
I asked on some selfloading pistol sites and was told this was "Glock Itis".
Most said they did not reload those cases.
Some I measured showed more than .030" expansion, good thing I was just cutting rings off the mouth of the case.
Don
Last edited on Sun May 15th, 2005 01:56 AM by drinks
|
| Posted: Sun May 29th, 2005 06:30 AM |
|
4th Post |
caz223
Handloading Master
| Joined: | Sun May 29th, 2005 |
| Location: | Michigan USA |
| Posts: | 492 |
| Photo: | | | Are you a handloader?: | Yes | | Favorite type of cartridge to load?: | pistol | | My favorite chambering is:: | .41 magnum |
| Status: |
Offline
|
back to top
|
Let me guess, G20, right?
Glocks are downright famous for the smileys and the 6o clock bulge.
Get a good aftermarket barrel.
They sell really good hunting barrels at KKM's site, also federal arms have good barrels on the cheap.
Last edited on Sun May 29th, 2005 06:31 AM by caz223
____________________
I'm not just a gun, I'm YOUR gun. (Hold me!)
|
| Posted: Mon Aug 9th, 2010 02:17 AM |
|
5th Post |
noylj
HB Pro Staff
| Joined: | Thu Jul 1st, 2010 |
| Location: | |
| Posts: | 122 |
| Photo: | | | Are you a handloader?: | Yes | | Favorite type of cartridge to load?: | pistol | | My favorite chambering is:: | 45acp |
| Status: |
Offline
|
back to top
|
It is either a plastic gun with an unsupported chamber or you are beyond max load. If you can see the bulge, squeeze the case mouth closed and put in recycle bin.
|
| Posted: Sun Aug 29th, 2010 07:09 AM |
|
6th Post |
RemMan700
HB Life Member
| Joined: | Tue Feb 24th, 2009 |
| Location: | DFW, Texas USA |
| Posts: | 226 |
| Photo: | | | Are you a handloader?: | Yes | | Favorite type of cartridge to load?: | rifle | | My favorite chambering is:: | |
| Status: |
Offline
|
back to top
|
I get a slight bulge on my 40SW glock brass but you have to angle it in the light to really see it. The unsupported chamber issue is no longer the case with newer glocks (Gen 3). I use the Lee set and after normal sizing the brass fits the chamber just fine. Lee makes a "bulge buster" kit that converts your Lee factory crimp die to presize your brass. They have a disclaimer that says not for use with Glock brass but I think they are being over sensative and trying to cover their butts. If it was an issue then their pistol die sets would say the same thing but they dont.
***Great just saw this was a post from 2005 LOL**Last edited on Sun Aug 29th, 2010 07:17 AM by RemMan700
|
| Posted: Sun Aug 29th, 2010 12:26 PM |
|
7th Post |
OldStuffer
Moderator
| Joined: | Sat Oct 31st, 2009 |
| Location: | Newton, Kansas USA |
| Posts: | 3238 |
| Photo: | | | Are you a handloader?: | Yes | | Favorite type of cartridge to load?: | I load everything! | | My favorite chambering is:: | 12-gauge A-5, .308 Winchester BAR, .45acp (in a 1911 of ... |
| Status: |
Offline
|
back to top
|
Pretty well covered.
The "Glockitis" issue is mostly with the slightly "older" Glocks with the high-pressure cartriges (9mmP, .40 Smith, 10mm), 35,000 to 40,000 psi cartriges.
Glocks are very reliable feeders, tightly fitting chambers and very small feed ramps are not very condusive to feeding ammo (particularly HP and SWC styles).
Conversely, generously cut feed ramps are not very condusive to supporting brass under high pressures.
I have read that Glock has "tightened" the chamber cutting of their barrels due to this problem, at least in the problem cartriges, and thus has stopped it.
It, like so many things, is a trade-off/balancing act.
If the bulge can really be seen by eye, easilly (like it seems you say it can), I'd pitch those. A newer/improved barrel would be a positive step to stop this from future occurence also, but MAY (or may not) impact what ammo it feeds well.
If it is a small bulging, I'd keep and re-use those with the above tooling mentioned.
|
|
