Breech block not closing

Olle · 05-11-2012, 10:28 PM

Shot it again today, and it was still doing it's thing. I took the whole top end apart completely so I could check the breech block in the upper, without any other parts dragging on it. I also checked it with feeler gauges, and found that the rails on the breech block were a tad too wide and dragging slightly on the bottom of the grooves in the upper. I polished this to fit, and polished some more on the rails. After that, the breech block would fall right in without resistance, so any problem from now on must be located somewhere else. The ejector felt a bit gritty, so I polished the groove just for good measure.

Now it will at least shut close on an empty casing inserted in the chamber. I'll try it again tomorrow, will also get some Winchester "white box" to see if it makes a difference.

Olle · 06-07-2012, 09:00 AM

Ok, time for an update: I tried some white box Winchester, and it was close but no cigar. The toggle will almost close and the cartridge will be seated against the breech face, but it still leaves about 1/16" to go. I hand fed the cartridges to study their way to the chamber, and found that it was a bit of a rough and "wiggly" path. I don't really want to polish or reshape the feed ramp, but that might be what needs to be done. I'd probably be better off trying a new recoil spring first.

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05-11-2012, 10:28 PM	#1
Olle User Join Date: Feb 2010 Location: Tennessee Posts: 1,149 Thanks: 159 Thanked 664 Times in 318 Posts	Shot it again today, and it was still doing it's thing. I took the whole top end apart completely so I could check the breech block in the upper, without any other parts dragging on it. I also checked it with feeler gauges, and found that the rails on the breech block were a tad too wide and dragging slightly on the bottom of the grooves in the upper. I polished this to fit, and polished some more on the rails. After that, the breech block would fall right in without resistance, so any problem from now on must be located somewhere else. The ejector felt a bit gritty, so I polished the groove just for good measure. Now it will at least shut close on an empty casing inserted in the chamber. I'll try it again tomorrow, will also get some Winchester "white box" to see if it makes a difference.

06-07-2012, 09:00 AM	#2
Olle User Join Date: Feb 2010 Location: Tennessee Posts: 1,149 Thanks: 159 Thanked 664 Times in 318 Posts	Ok, time for an update: I tried some white box Winchester, and it was close but no cigar. The toggle will almost close and the cartridge will be seated against the breech face, but it still leaves about 1/16" to go. I hand fed the cartridges to study their way to the chamber, and found that it was a bit of a rough and "wiggly" path. I don't really want to polish or reshape the feed ramp, but that might be what needs to be done. I'd probably be better off trying a new recoil spring first.