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Posted: 10/19/2004 11:38:19 AM EDT
[Last Edit: 10/19/2004 11:41:18 AM EDT by Parrandero]
First shot reslted in a failure to extract. New barrel, new B/BC, SP1 upper, gunsmith assembled.
Ammo was Winchester Q3131 circa 1994.
So what happened, rough chamber, short headspace, operator headspace?







Link Posted: 10/19/2004 12:12:08 PM EDT
From the picture of the brass, it looks like your chamber is rough. Looks like the brass expanded in the chamber and stuck. Maybe it's just the picture.
Link Posted: 10/19/2004 2:59:27 PM EDT
I agree, looks like a rough chamber.

Look at the "ring" on the brass in the second pic.
Link Posted: 10/19/2004 3:15:38 PM EDT

Originally Posted By redleg13a:
From the picture of the brass, it looks like your chamber is rough. Looks like the brass expanded in the chamber and stuck. Maybe it's just the picture.



That is what i thought also, the brass is rough on all sides just as in the picture. So how do I go about polishing the chamber?
Link Posted: 10/19/2004 3:27:13 PM EDT
some ideas emailed
Link Posted: 10/20/2004 3:42:35 AM EDT
Link Posted: 10/21/2004 4:42:48 PM EDT
[Last Edit: 10/21/2004 4:46:53 PM EDT by kyplinker]
Parrandero, hope you don't mind me piggy backing your thread but I just got my M4 back from JT yesterday and I had a new Wilson chrome lined 16" bbl installed and I had the same problem today with ripping the brass like shown in your pic. It didn't do it for the first 30-60 rds but the next 20 it did almost every round and then the last 30 it did fine. I thought it was my brass which was a mixture of reloads and new winchester white box from wal-mart (go figure), but I have never had this problem until today.

What's the likelyhood of this just being bad brass?
Link Posted: 10/22/2004 12:08:56 AM EDT
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