Fumbler
Member
Here's the scenario:
Got a new Rock Island Armory 1911 Tactical (fullsized, 45ACP).
Within the first 30 rounds or so it had two failures to return to battery that could easily be pushed into battery.
Sounds like a tight extractor right? Well I reduced the tension and cleaned up the edges of the extractor.
It went through the next 150 rounds without hiccups.
I got new mags, a Kimber 8 round and Chip McCormick 10rd Powermag.
Went to the range and the Novak mag had 1 FTRB and 1 3-point jam that I could not push into battery. The case mouth was in the chamber on the 3-point jam.
The Powermag had 3 3-point jams exactly like the Novak mag, the Kimber had 1 3-point jam.
I don't think it's the extractor, the extractor has barely enough tension to hold a cartridge.
Some obervations:
When the slide is rearward, the barrel rests on the frame above the feed ramp. The distance between the feed ramp and barrel is 1/16".
However, with the slide back the barrel can cam upwards leaving approximately 1/32" of vertical space between the bottom of the barrel and the frame.
I've read threads about the link being incorrect in length.
It appears that the link isn't too long in batter nor too short out of battery.
I guess my questions are:
If the barrel doesn't sit on the frame when the gun chambers a cartridge, then does this vertical gap cause the 3-point jam?
Should the barrel rest on the frame when the gun is out of battery and chambering a round?
Why doesn't the barrel rest on the frame? Is it because the barrel hood/lugs are too shallow and allow the barrel to move upwards?
Is this a manufacturing defect?
I'll try to take and post pics tonight.
Got a new Rock Island Armory 1911 Tactical (fullsized, 45ACP).
Within the first 30 rounds or so it had two failures to return to battery that could easily be pushed into battery.
Sounds like a tight extractor right? Well I reduced the tension and cleaned up the edges of the extractor.
It went through the next 150 rounds without hiccups.
I got new mags, a Kimber 8 round and Chip McCormick 10rd Powermag.
Went to the range and the Novak mag had 1 FTRB and 1 3-point jam that I could not push into battery. The case mouth was in the chamber on the 3-point jam.
The Powermag had 3 3-point jams exactly like the Novak mag, the Kimber had 1 3-point jam.
I don't think it's the extractor, the extractor has barely enough tension to hold a cartridge.
Some obervations:
When the slide is rearward, the barrel rests on the frame above the feed ramp. The distance between the feed ramp and barrel is 1/16".
However, with the slide back the barrel can cam upwards leaving approximately 1/32" of vertical space between the bottom of the barrel and the frame.
I've read threads about the link being incorrect in length.
It appears that the link isn't too long in batter nor too short out of battery.
I guess my questions are:
If the barrel doesn't sit on the frame when the gun chambers a cartridge, then does this vertical gap cause the 3-point jam?
Should the barrel rest on the frame when the gun is out of battery and chambering a round?
Why doesn't the barrel rest on the frame? Is it because the barrel hood/lugs are too shallow and allow the barrel to move upwards?
Is this a manufacturing defect?
I'll try to take and post pics tonight.