Arisaka type 44

B

brando

New member
I have a bubaised Jap type44 6.5mm . Is it feasible to re barrel to 7.62x 39 I understand there is a problem with the Japanies threads on the re ceiver being at an odd pitch origional barrel is well worn but is suprisingly still a good shooter but I fear not for much longer:( It does appear the 7.62 would function from the box if the chamber would accept:) Any thoughts or forget it $$$$:D
 
custom barrel ??

I have heard that the Arisaka recievers are so hard that they will deform the threads of a new barrel to there pitch. awhile back I read an artical that claimed the Arisaka recievers are realy strong I believe it said they are the strongest ?? I realy hate to retire it (the reciever) . It would be nice to keep it in action. any thoughts maybe out of the box think is called for.:D
 
You can buy cheap barrels from Numrich (e-gunparts), but they are not exactly cheap. If you are looking to just screw a barrel into an Arisaka, you can buy a short-reamed or long-reamed barrel and have a gunsmith fit it. The rim diamter on a 6.5X50mm Arisaka is .471", so basically the same as 30-06. You can put any round you want on it, you will likely never come close to blowing it up unless you try really hard. But, given how hard an Arisaka receiver is, you may want to consider a Scout rifle project.
 
The 30 06 would fit the 7.7 Arisaka but the 6.5 is a short round the 7.62 x39 fits in the magazine of course it won't feed, rims appear to be same size. Scout rifle is the idea.
 
The Arisaka receiver is plenty strong, but the idea that it will "deform" barrel threads to its pitch is nonsense. IMHO, that action is not really suitable for what you have in mind. The bolt face and extractor are too big for one thing, so the would need work.

Jim
 
threads

Sir;
Go to your lathe feed chart, after counting threads per inch on your bbl, and divide the threads per inch by 1000 and get the feed. Look on your lathe feed chart and see if you've got a real close match.
Mauser threads are 55 degree but most all of us cut 60 degree!!!
I'm sure what I've just said you already know but we forget the obvious at times (I do frequently now).

Brownells tech. dept. is dishonest when the say some Turkish Mausers have an 11 1/2 thread pitch thread. I told them in my article I sent them it was a machining error - the cerrosafed the action and I was correct - 12 pitch in the action but never changed it on their site. BBl. was 11 1/2!
Harry B.
 
Arisaka

Yes:
Early and mid-range Jap 6.5 actions were the strongest Ackley tested. He tested the steel analysis and found a very sophisticated heat treat on them. I was not superior steel - just good steel with great heat-treating.
Harry B.
 
arasaka threads

I had a soft cover book with all the rifle threads.cant find it now and I have looked.but under arasaka it stated to turn the threads and the receiver would form the threads to fit.one of the barrel companies used to make arasaka barrels and fit them to customers receiver.it was not douglas,but was advertized in shotgun news.7.62 x 39 is drying up.get it in 308.:)
 
arisaka

SIR:
Here are the dimensions on the 38 and 44 Jap:
O.D. 1.020
THD. 14V TPI.
Bore into bbl Dia. .720 X 360 depth.
Tang length .720

This work is easilly done on a standard American Lathe!
Harry B.
 
Arisaka

I have an Arisaka that has been rebarreld to .308 Win. A lot of metal work was also done, shortening the tang of the action, adding a "button" to the safety, drill & tap, etc. Sorry, don't know what the action started out as, a 7.7mm I think.

Rebuilding your Arisaka to a 7.62x39 would not be a good idea. There are lots of better rounds to pick from. Rounds that not only offer better performance, but that also fit the action better. Opening up the boltface and extractor for a round a few thousandths larger than the 6.5x50 is easy. Bushing it for one considrably smaller (7.62x39 rim .445) is not.
 
Thank you

Thanks for the info, this seems to be more than I can handle. I notice CZ makes a blot action for around $500 in 7.62x39 that seems too much for that cartrige.
Just a thinkin project for now. Iam sure to come up with some thing else.
Just need to stay with in my limits:D
 
threads

Dear Sirs:
As Jim Keenan so correctly says (as usual) there is no action hard enough to "form" threads! And, it is an idiotic practice - any so called smith that doesn't work out threads on his chart or the chart on the quick change gearing on the lathe should't be doing any work.
Be very careful out there about, "I heard" stories - there is only one way - the right way, good machining.
I even ground my Mauser thread tool at 55 degrees when threading Mauser bbls.
Harry B.
 
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