Originally Posted By jestertoo:
So I've been working a lot on getting my 22 kit to work. I consistently get empty brass stuck in the action.
I took the kit apart several times and clipped the spring down to the minimum. It improved function, but I still have the ejection problem.
I believe the problem is a poor extractor. If I have a dud round, and have tried to fire it, it will fail to extract, with the extractor jumping the rim.
This leads me to believe the extractor is not consistently holding the fired cases against the bolt until impact with the ejector.
Anyone else come to this conclusion or fixed it with mods to the extractor? Maybe I just need a newer one or a stronger spring?
I didn't see anything in the tuning guides.
For reference, it seems to work better in semi auto, but poorly in full auto. It's not better than 50% reliable in either case.
Hey Jester, I own two Spike's ST-22's in semi-auto only, but after they were broken in I rarely, if ever, have FTE or FTF's. My LW barreled M-4 required the chamber to be polished, or "buzzed" as the guys here call the process. You may want to consider this tweak for your gun as it helps with chambering and extraction. It is simple to do using a new bronze bore brush coated with JB's non-embedding bore cleaning compound, and chucked in a cordless drill. Do very little at a time, thoroughly cleaning the entire bore after using the paste. What you are looking for is the cartridge to fall out of the chamber when the gun is tilted up. You can always send Spike's an e-mail and see what they think prior to fiddling about.
Also, if your bolt is several years old you probably have the old style extractor. A newer, improved extractor and spring are available from Spike's at a reasonable price, and they're easy to install with simple hand tools. You full auto guys also run more rounds between cleaning than I do, so before I tried the "buzz," I'd do a thorough cleaning first, paying attention to the area just in front of the chamber. In most instances, crud builds up in that location and contributes to poor extraction.