Modifying a 10/22 charging handle. Lots of pics.

Rifleman44

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Hi guys:


Since there are lots of surplus stock charging handles around and some of you may have access to a Lathe and Mill, I thought it would be of interest to post this.


I weighed the stock handle at 12.5g, the goal was to add as little mass as possible but I'm sure it isn't too critical. The mechanics of the 10/22 action seem pretty sloppy to me. I'm not saying that's a bad thing, I suspect it's part of what has produced a reasonably reliable low cost rifle, which we all love to improve upon.


I started by milling the old handle 3/16" deep to accept half the diameter of the new 3/8" Delrin extension. I also drilled 2 holes to be tapped #3-48. My guess is that the handle is cast steel which machines well.
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I made the handle extension from 3/8" Delrin round bar, I used a boring head to recess the Delrin part to match the radius of the end of the original charging handle. Here are the two finished parts.
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I cold blued all the steel parts.
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Here they are assembled. The new assembly weighs 13.3g. I put Loctite 222 on the screws.
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Comparison with the stock handle.
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And on the rifle.
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The longer handle is much nicer to rack, specially in the Winter!
 
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The case is attached with JB Weld.After I did the mod I was getting a lot of stovepipes.At first I thought that the extra weight might be affecting the timing,so I radiused the back of the bolt to remove some weight.I also polished the bolt and the guide rod but I was still getting lots of stovepipes.Then I noticed that the O-ring closest to the bolt had little cuts in it.I think the empties were hitting the O-ring and bouncing back into the ejection port.I've since removed the first O-ring and installed a Tactical Solutions extractor but I havn't tried the rifle since.
 
Nice easy mod. Will the delrin work loose? I wound up making a complete charging handle for mine, didn't want to mess with screws.

I was looking at your Gopher Sniper with interest!
This one looks quite different. I'm not sure I'd want an Aluminum stock but very cool nonetheless.

Did you make a drawing of the charging handle? Willing to share?
I suspect yours is even lower mass than mine. No screws, so did you make it from round bar?

The Delrin part on mine is fastened with 2 screws. If they get loose I'll upgrade the Loctite so I'm saying it's solid.
 
The case is attached with JB Weld.After I did the mod I was getting a lot of stovepipes.At first I thought that the extra weight might be affecting the timing,so I radiused the back of the bolt to remove some weight.I also polished the bolt and the guide rod but I was still getting lots of stovepipes.Then I noticed that the O-ring closest to the bolt had little cuts in it.I think the empties were hitting the O-ring and bouncing back into the ejection port.I've since removed the first O-ring and installed a Tactical Solutions extractor but I havn't tried the rifle since.

Took me a bit to figure out where the O-rings were. Clever handle!
Added mass on axis with the bore will have the least effect on the action. Mass on the handle however, will cause accelerated wear. The longer the handle, the worse the wear. If the handle is too long and heavy, the action won't even work. I think your assessment makes sense but I'm not sure how you have kept the next O-ring in line from creeping too close to the bolt.

You also bring up a good point. Is the stubby stock handle designed that way in part to prevent ejected casings from hitting it?
 
I didn't save any dimensions or drawings when I did the Tommy gun, but as I recall the handle was made from bar stock. I believe the handle is offset from the internal guide. Did the round bit and made a jig to hold it for the rest of the machining. On the gopher sniper being aluminum, very expensive Anschutz target guns have alum stocks. Saw some others on the net also. Have a look at Competetion Machine Inc. smallbore stocks.
 
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