Lakefield Mossberg mkii Repeater bolt question.

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TheGuy

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Hello all. I've inherited an old .22 (the one I learned to shoot with as a kid) from my grandpa. It's a Lakefield Mossberg mkii repeater, it shoots great out to 200 still, but has a nagging FTE problem, like 1 in 5. I have near zero gunsmithing knowledge, and am looking for help in solving this problem. Is this bolt common with other rifles? Do the extractor claws get worn down? Do the springs get soft (that's my un educated guess)? Any sources for replacement parts?

I'll post photos later if anyone needs to see the bolt.

Thanks for your help,
Chris.
 
The rifle was popular, and they are abundant. Savage took over manufacturing (in Lakefield ON). I think there have been some revisions to newer models, but parts are still available for yours'.

Did you check your ejected brass? Some irregularities in a chamber can be found doing so. I'd start with a good cleaning, and inspection. Look very closely at your extractors. See if you can spread 'em a little with your finger, and that they return freely. (that confirms springs are good, and travel is unfettered). Also make sure there is no crud in the extractors' hooks themselves. Have a good snoop in your chamber for any crud, or pitting too.

The extractors are held in place with roll pins, but I would try blasting with brake cleaner, or a soak in solvent before disassembling.

Fun rifles. Made in Canada. Shoot it with pride!
 
Thanks for the info on that model. It's a great little gun, beautiful trigger break on it. It's also got a Bushnell 4x scope with a .22 BDC and both high and low velocity turrets. It's pretty much dead on with 1300 Super X. Gobs of fun. I didn't know it was a Canadian made piece.

The chamber is clean, I am comfortable with the cleaning/ maintenance of that part of the weapon, I just have very little bolt gun experience, and didn't want to tear into it without some advice. When you mention irregularities in the brass. I'm guessing striations along the length would show burrs etc.? Anything else I should look for that would correlate to a specific problem?

I'll have a go at the bolt with some stronger cleaners and see if I can get some carbon out. I'm guessing if it built up around those roll pins the resistance could cause my problem?
 
I have the same 22 and had the same issues. I ended up punching the rollpins out and filing the extractor slightly. This helped out alot. I used to get stuck shells almost every second one, now it might happen after maybe 20-30 shells. Western Gun Parts has the extractors, but they are around $25 a piece and there are two. A little costly and I`m darn sure anyone good with metal can fab up some on the cheap.
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Sorry for the last pic, My camera has auto focus, but I have the shakes.....so I get blurry pics at times.
 
TheGuy said:
Thanks for the info on that model. It's a great little gun, beautiful trigger break on it. It's also got a Bushnell 4x scope with a .22 BDC and both high and low velocity turrets. It's pretty much dead on with 1300 Super X. Gobs of fun. I didn't know it was a Canadian made piece.

The chamber is clean, I am comfortable with the cleaning/ maintenance of that part of the weapon, I just have very little bolt gun experience, and didn't want to tear into it without some advice. When you mention irregularities in the brass. I'm guessing striations along the length would show burrs etc.? Anything else I should look for that would correlate to a specific problem?

I'll have a go at the bolt with some stronger cleaners and see if I can get some carbon out. I'm guessing if it built up around those roll pins the resistance could cause my problem?
Click to expand...

Not much space around those roll pins for crud, but the channels in the bolt that extractors fit in can accumulate it...

Looking at used brass can tell a lot. Anything other than a smooth surface is not cool at all.
 
Just a Thought.
Have a look where the extractors would go into the barrel. The small spaces can fill up with crap easily and will hold the extractors slightly open if it gets bad enough.When you go to open the bolt the extractor is on the side of the rim instead of on the front side. I've bought lots of older Mossbergs where these were caked full of dirt and powder/wax residue. You will need a pick like a dentist uses(Princess Auto sells a small set that works perfect for this) or sometimes brake cleaner with the spray tube will push it out. Make sure receiver is out of stock if you use the Brake cleaner.
If the right extractor looks worn take out and square the back edge slightly. They can wear and just a light touch with a stone can make a world of difference.Not too much as the 2 extractors need to work together.

Camster has the rite idea as well with the extractor channels.
The extractors are stamped and can be less than 100% flat. I usually take a piece of 400 wet /dry with oil on a piece of glass and rub both side each extractor until they are smooth. Again, don't go crazy or they will be sloppy in the channel. Just cleaning them up. Also a fine file and just clean the edges of the extractor channel as they can have tiny burr's.
 
The flip down stocks are leftovers from when Lakefield-Mossberg took over the manufacturing. They used up the old mossy stocks before going back to the one piece woods. I have had several with the fold down as well as the solid stock. Kinda different but could be a collectible too depending on how many were shipped that way. But all in all a greatlittle accurate gopher getter. Mine sees a lot of action when i take someone with me. I prefer using my Marlin 81.
 
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