Break out a chamber brush, and really go to town cleaning the chamber by hand with the brush and CLP.


Next on the extraction side, start off by adding a #60 O ring (about a dime at any hardware store) around the extractor spring. This will increase the tension of the extractor so the spent case rim does not slip off the extractor at extraction.

The O ring is going to go south in about 500 rounds, and at that time, if the problem re-occurs with O ring now removed, then it's time to order up a Wolf extra tension extractor spring. Hence, with a couple hundred rounds through the barrel to self polish out the chamber, and you making sure that the chamber is clean to begin with (not still packed with assembly grease and debris), the problem (sight rought/tight chamber) should work itself out with nothing more than the O ring band-aid for break in.

Also, do make sure that you are using CLP to clean and lube the rifle, with the only exception being the bore, and here something like Sweets does a very good job at removing copper without the need of a lot of scubbing. As for Hoppes, let it for your bolt actions and shotguns, since the cleaning solvent leaves behind a residue that just collets fouling like a magnet, and hoppes oils lacks any cleaning properties, and will not dissolve the fouling as you are using it for a lube.

So, took your advice, and added a #60 o-ring to the extractor, cleaned and re-lubed the bolt (I use Rotella T6 Oil, works great) and took a 20ga brass brush and cleaned the chamber out as well as I was able, then headed to the range. Like an idiot I left my 10rd magazine at the range last time it seems, and didn't realize it till I got BACK to the range, so only able to test by hand loading a live round, and dropping a slightly charged BCG on it (Not recommended!) But, was able to get 4/5 to extract properly, and that 1 may have been my fault for being gentle with the charging handle.

Once I get some more ammo to sight it in with (saving my hunting ammo till it's close) I'll know it worked 100%.

Thanks a ton.

Went to the range, and had mixed results. First 3 out of the mag were perfect, loaded another 3 and the third failed to extract, loaded another 3, same thing. Bolt locks back but the round is still solidly in the chamber.

Any ideas?

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If the extractor is still slipping off the rim with the O ring installed, then pull the extractor and take a good look at the grabbing claw, and even the rim relief channel just under the claw of the extractor. Double check to confirm that the claw grabbing edge is sharp, and that the sides of the relief channel do not have milling burs preventing the rim from fully seating in the channel.

Simply, with the increased tension from the O ring, the rim of the spent round should have been torn off before the extractor let go of it on the way back.

When it fails to extract, is the spent round seated entirely in the chamber, or is it sticking out just a bit?