Mini 14 barrel re-chambered for .22 TCM.

Re chamber probably not, youd be shortening the barrel by .75" or so to be able to cut a new chamber, which will also move your gas port back the same amount, even if there is enough shank left to rethread and reinstall.

Better to just have a .22TCM barrel made. Tthen youll likely have to look at getting the stubby round to feed from the minis mag and getting the action to run on 1/3 or so the gas volume.......

while it probably CAN be done, Its beyond anything ID attempt and the cost would be prohibitive.

If your interested in a "sporting" type rifle in .22TCM, the Henry Homesteader MIGHT be a doable option....I dont know enough about them to have an opinion.
 
Something which takes down may be easier to get the barrel done for. Many things can be done but they get $$ and don't always turn out ideally.

Maybe, a 9mm pattern AR? Starting point is a bit closer I think if you put a .22 cal barrel on it. Tons of other issues will need to be addressed, but could be a good start point.
 
I'm sorry I wasn't clear.....
I have a spare mini 14 barrel, and was thinking about making a falling block receiver for it. in 22 TCM.
Thanks for the reply, let's go again now that I have given more info.
STW
That would work fine and fairly easy id think.

Cut off enough that you can ream the chamber to .22tcm.
Profile and thread to your action. Then cut any extractor relief you need.
After that just need to deal with the gas port.
 
I doubt there'd be enough gas to reliably run the bolt/bolt slide even if you changed the port size and lightened the recoil spring. Weird idea though. I like it.
 
Sounds like he is making a single shot falling block type of thing so no semi auto action to cycle. One would need to match the threads or whatever holds the mini 14 barrel into the receiver, cut an extractor, so on. It sounds like a fun project if one can pull it together.
 
Does your mini barrel have the gas ports drilled in it? If so, how will that be dealt with? I fear welding it will affect accuracy by introducing a rough patch in the bore, but leaving them open will cause blast issues like a revolvers B/C gap does.

On the visual side, the mini 14 barrel is rather homely under the stock and hand guard with the rapid taper near the chamber and steps near the gas block. I just don’t know if it can be made very appealing in an open stock like a single shot would have. But that’s just cosmetics, not function.

Honestly, if you are going to all the trouble of making a neat little TCM falling block, it seems like it’ll be more hassle, and maybe even more $$, to try and convert an existing mini barrel than it would be having one made specifically for your project.

But if you try it let us know how it works out. :thumbup:

Stay safe.
 
I own a RIA 1911 9mm/22tcm. The 22tcm spring is really really light

A PC9 would be cool in 22tcm. I think the stock 9mm pc9 bolt would be too heavy and would need to be lightened as well as putting on a lighter spring.

A rolling block 22tcm would be cool but a mini 14 barrel with the gas port nakes no sense to me.
 
Does your mini barrel have the gas ports drilled in it? If so, how will that be dealt with? I fear welding it will affect accuracy by introducing a rough patch in the bore, but leaving them open will cause blast issues like a revolvers B/C gap does.

On the visual side, the mini 14 barrel is rather homely under the stock and hand guard with the rapid taper near the chamber and steps near the gas block. I just don’t know if it can be made very appealing in an open stock like a single shot would have. But that’s just cosmetics, not function.

Honestly, if you are going to all the trouble of making a neat little TCM falling block, it seems like it’ll be more hassle, and maybe even more $$, to try and convert an existing mini barrel than it would be having one made specifically for your project.

But if you try it let us know how it works out. :thumbup:

Stay safe.
With a lathe, and considering a single shot.....Id probably try turning a shoulder on the mini barrels shank, thread the muzzle for a jamb nut, then tension a tube between them. Under the tube put a saddle clamp over the gasport, or weld over it.
Id agree tho that starting from a fresh blank would probably end up being enough easier that unless one REALLY wanted to use parts on hand, the effort would be worth the cost.
 
A number of years ago I was given a 1022 stock and barrel by a fellow was into creating mini assault rifles, not my bag. I made a simple breech assembly for it, did some modifications and made a . 22 cal sorta mini Ferguson rifle. It shoots .22 cal air rifle pellets. I used an old junker percussion lock from an old pistol and those plastic ring caps for ignition. It shoots remarkably well. If one has the desire and resources available why not?
 
Falling block. Makes more sense and sounds neat.

Twist rate right in the barrel you have?
If not ideal, and given the gas hole issue there may be better options as a start point.
Would hate to see a lot of time/effort go into it if that barrel isn't good for it.
 
I'm sorry I wasn't clear.....
I have a spare mini 14 barrel, and was thinking about making a falling block receiver for it. in 22 TCM.
Thanks for the reply, let's go again now that I have given more info.
STW

Ok, here are my thoughts although I doubt they are even worth two cents. Sounds good to me. Weld up the gas port and since the 22 TCM is just a stubby 223 case cut off just enough of the camber to rechamber it to the TCM without losing much barrel length at all. I want to see the build when you are finished.
 
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