New twist on MkII extraction problem- now cases won't eject.

[unodemo]

No joy on the range today. FTE resumed on shot #9. Fired all 50 rounds and divided the casings into ejected/FTE groups. Lets see if I can reverse engineer this thing because my feewings are huht weawwy weawwy bad.

The good news is the CCI SV shoots tight groups if you want to play single shot all day long.

[MCscout]

Another thought on MK2 extraction.
Noodled some more on spring clip tension and started rummaging through my parts pile. Found several fuel line hose clips, which can be modified to fit over the spring clip.

Held the hose clip in a pliers and ground equal material off each side until it fit the spring clip recess. Then straightened out the tab ends and inserted it over the spring clip, marking where the bolt flats and extractor/bullet guides are. Then removed the hose clip, cut it off on both sides where the bolt flat marks were, filed slots for the extractor and the bullet guide and re-installed on the bolt.

Used a Swiss file to clean up the ends of the hose clip flush with the bolt flats.

Rifle feeds, extracts and ejects very well. This really adds tension to the extractor.



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[MCscout]

Back from the range today. Put 200 rounds of CCI SV through my M93 with no ejection problems. Looks like the fuel line clamp mods work well.


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[Professor]

I am no expert, but mine failed to extract until totally cleaned. Theses guns wont suffer much fouling and the lead bullets have a lot of coating on many brands. I scrubbed the barrel (chamber) in front of the bolt and cleaned it thoroughly and it right back to perfect ejection. A few passes with Hoppes and a dry swab did it. Mine fouled within fifty rounds. At the range similar experience with other Savage shooters of rimfire bolt actions. I only speak for myself.

[Jester560]

@MCscout

What is the fuel line clamp mod?

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[Jester560]

Back from the range today. Put 200 rounds of CCI SV through my M93 with no ejection problems. Looks like the fuel line clamp mods work well.


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[MCscout]

Here is a picture of the fuel line clamp, and the modified one installed on the bolt over the existing spring clip.https://uploads.tapatalk-cdn.com/20190429/b507066e6f5fb5519eaf3d61f5d7b2db.jpg


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[unodemo]

Solved my Mkii FTE problem. Put one of the fouled casings back in the chamber and it still did the FTE dance. Wax buildup outside the mouth of the casing causes it to bind and the extractor rolls off of the rim. Put an Aquila in the chamber and it came straight out, no fuss, every time.

Not really interested any longer in figuring out the root cause of the problem.

Got my shipment of Aquila Rifle Match Competition ammo (40gr LRN, 1080fps, Eley Prime) and went to the range with the same fouled bore. No FTE at all. Shot sub-half inch groups at 50yds when I do my part. The ammo handled a gusting 12mph wind no problem, which surprised me most of all.

Not interested in a .22 rifle that has to be cleaned just for looking at it. I want something that's gonna be tough like a Timex and accurate like a Rolex.

I'll be liquidating my CCI SV and Green Tag ammo shortly.

[Jester560]

I'll be liquidating my CCI SV and Green Tag ammo shortly.


Might want to hold onto the CCI for future trading since CCI has made it known they have scaled back production.



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[Marine]

My MKII will fail to extract after 70 to 100 rnds depending on ammo. It seems like the ammo with a lot of wax causes it the most. Usually just another cycle of the bolt is all I need to extract and I think the case has cooled and shrunk. I will just spin a brush in the chamber and run my Otis ripcord through the barrel and all is well till next time. Note: Mine is shooting tighter the higher the shot count and I am over 1000 now.

[WeeHooker]

Hi, I know this is an old thread but my search hasn't come up with anything. I'm wondering if anyone has any details on how to build the fuel clamp spring featured in this thread. I'm guessing you start with a 1/2" clamp and cut with a dremall but..............?

[mrnate8]

Hi Andy,

I had a similar problem and found a resolution.

Initially, I had a safety selector switch issue (in separate forum if interested) and I believe when I was troubleshooting, I enlarged the extraction c-clip. The standard width of a "new" extractor spring measures .480. Not only did I bend it back cautiously, but I also lightly sharpened the extractor edges (black one) so it would catch the case rim better. It cycles and extracts the cases like new.

I also heard of people putting a second clip on top of the first one. You can buy the clip here as well, but I wanted to try the fix first before purchasing (it's cheap).

https://www.gunpartscorp.com/gun-manufacturer/lakefield/mark-ii-lkfld