What is my gun doing, and is it a problem?

limatunes · June 29th, 2007, 11:18 AM

All righty then. It's time to play that famous game, "DIAGNOSE THE BRASS."

When I went shooting with my Dad in Wisconsin I discovered that about seven (at least that I found) brass casings were a little mangled when we went looking for brass. I know some brass being bent or beat up can be normal but these all looked the same.

I went shooting yesterday and while picking up the brass I discovered more brass with the same marking on them. I decided to take it home, take pictures and see if anyone could tell me if I should be worried or not.

The gun is not jamming, it's not doing anything negative in and of itself, but I have no idea why the brass would look like this.

This is my Kimber Ultra CDP .45. All of the brass is from Winchester 230 grain FMJ rounds.

Any insight?

ccw9mm · June 29th, 2007, 11:19 AM

What gun, what ammo?

If thin-walled reloads, I can see it getting fried like that, perhaps. But I have never seen the edges/lips of brass casings get chewed up like that, from any gun. Stumped.

Looks mechanical to me, like the brass is jamming up against something, hard.

limatunes · June 29th, 2007, 11:21 AM

Quote:

Originally Posted by ccw9mm

What gun, what ammo?

Ooops.. Forgot to mention. This is with my Kimber CDP in .45. The ammo I'm usually shooting is Winchester 230 grain FMJ.

pgrass101 · June 29th, 2007, 11:29 AM

It looks like the spent round is being jammed in the port as it is ejecting.

Translation the slide in coming back into battery before the caseing has cleared the ejection port. It could be lower charge in round not fully actiutation the slide and/or stiff springs.

How many rounds have been ran thru this pistol? Are the springs new? New type ammo?

Warning the above can prove to be competely bogus I'm just guessing never having seen the pistol but if this is happening there should be brass residue or scraps on the ejection port.

But going by the cases being indented I would guess this is happening. It would not cause the gun to jam because the cases are mostly ejected when the slide makes contact, which then pushes them out the rest of the way.

limatunes · June 29th, 2007, 11:35 AM

Quote:

Originally Posted by pgrass101

It looks like the spent round is being jammed in the port as it is ejecting.

Translation the slide in coming back into battery before the caseing has cleared the ejection port. It could be lower charge in round not fully actiutation the slide and/or stiff springs.

How many rounds have been ran thru this pistol? Are the springs new? New type ammo?

Warning the above can prove to be competely
bogus I'm just guessing never having seen the pistol but if this is happening there should be brass residue or scraps on the ejection port.

If that's the case, wouldn't it be jamming the gun? It certainly looks like it's hitting SOMETHING, I agree, but the fact that it's not jamming is what's confusing me.

I have put about 400 rounds through the gun. While the springs are not new as far as I know, they are in good condition. This brass is from Winchester.

limatunes · June 29th, 2007, 11:37 AM

And, well, I think I found what the brass is hitting.

The barrel hood. If you line the brass up it's a perfect fit. However, it's not jamming (thank goodness) but could this be a potential problem?

Ten_Ring · June 29th, 2007, 11:38 AM

I honestly can't see how it is not jamming. It does appear to be caused from short cycling or the extractor is in need of tuning. Are there "any" brass marks on the weapon around the port?

Ten_Ring · June 29th, 2007, 11:39 AM

Sorry...crossed post.
And yes....that can be a horrid problem. Check the extractor tension and make sure the ejector is in good shape.

limatunes · June 29th, 2007, 11:41 AM

Quote:

Originally Posted by Ten_Ring

I honestly can't see how it is not jamming. It does appear to be caused from short cycling or the extractor is in need of tunning. Are there "any" brass marks on the weapon around the port?

No.. That's what I was looking for when I took the gun down and then I saw how perfectly the brass fits onto the barrel hood. Very strange.

pgrass101 · June 29th, 2007, 11:41 AM

Quote:

Originally Posted by limatunes

And, well, I think I found what the brass is hitting.

The barrel hood. If you line the brass up it's a perfect fit. However, it's not jamming (thank goodness) but could this be a potential problem?

I think it could lead to stove piping. See if you can get it to stove pipe or eat brass more when you limp wirst.

Edited to add If it is the barrel hood it is probably to volient an ejection instead of to weak. This could smooth out with more rounds fired thru the pistol or the round could be hot. This is the opposite of the slide bite I mentioned above.

June 29th, 2007, 11:19 AM	#2
ccw9mm VIP Member Join Date: Jul 2006 Location: Oregon USA Posts: 5,943	What gun, what ammo? If thin-walled reloads, I can see it getting fried like that, perhaps. But I have never seen the edges/lips of brass casings get chewed up like that, from any gun. Stumped. Looks mechanical to me, like the brass is jamming up against something, hard. __________________ Your best weapon is your brain. Don't leave home without it. Reports: CZ P01 pt1, pt2. Thoughts: Justifiable self defense. Reality: Disarming citizens only results in more victims. Tip: Use the <search> feature.

June 29th, 2007, 11:29 AM	#4
pgrass101 Moderator Join Date: Sep 2006 Location: Alabama Posts: 6,008	It looks like the spent round is being jammed in the port as it is ejecting. Translation the slide in coming back into battery before the caseing has cleared the ejection port. It could be lower charge in round not fully actiutation the slide and/or stiff springs. How many rounds have been ran thru this pistol? Are the springs new? New type ammo? Warning the above can prove to be competely bogus I'm just guessing never having seen the pistol but if this is happening there should be brass residue or scraps on the ejection port. But going by the cases being indented I would guess this is happening. It would not cause the gun to jam because the cases are mostly ejected when the slide makes contact, which then pushes them out the rest of the way. __________________ Noli nothis permittere te terere

June 29th, 2007, 11:38 AM	#7
Ten_Ring Member Join Date: Jun 2007 Location: Washington County Alabama Posts: 122	I honestly can't see how it is not jamming. It does appear to be caused from short cycling or the extractor is in need of tuning. Are there "any" brass marks on the weapon around the port? __________________ http://www.odmp.org/ Defensor Fortis Tutor et Ultor Aduentes Fortuna Juvat Libertatem Defendimus

June 29th, 2007, 11:39 AM	#8
Ten_Ring Member Join Date: Jun 2007 Location: Washington County Alabama Posts: 122	Sorry...crossed post. And yes....that can be a horrid problem. Check the extractor tension and make sure the ejector is in good shape. __________________ http://www.odmp.org/ Defensor Fortis Tutor et Ultor Aduentes Fortuna Juvat Libertatem Defendimus

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode