PS.I think that I might have seen a chamber insert to convert 7.62 x 54r for use with. Hummm.anyway a 7.62 x 39mm would be "softer shooting". As a good press is required, perhaps annealing of the brass and maybe even neck thinning.
IF.I couldn't find the proper 7.7 Japanese ammo, didn't wish to re-barrel (or re-chamber) my rifle or if I didn't want to start reloading. IMHO, I'd be willing to try the chamber insert. So, I might just use steel cased ammo because I'm lazy. Who cares? I'm not gonna reload steel cases. And hope for better extraction and ejection.
a 7.62 x 51 NATO cartridge (max about 60,191 psi).Īnd, both the 7.7 Japanese and 7.62 x 39 mm use the same diameter bullet (0.311"), that's a good thing.Ĭases.yup, steel vs brass cartridges in 7.62 x 39mm? I'd go with the brass. Then, the 7.62 x 39mm cartridge (max about 45,010 psi) is developing a heck of a lot less pressure vs. That the ejection cycle on a M1 rifle is violent compared to a bolt action. Yeah.IMHO, it's just better to have a dedicated rifle barrel.if you can afford it. The military had problems with the ejection of the chamber insert on occasions. The types of 7.7x58 rimless T99 ammunition utilized the same case mouth. 30-06 chambered M1 Garands using 7.62 x 51 NATO ammo. The Japanese Army also still utilised the 6,5 Arisaka as well and they had some. Yes, chamber inserts have been tried by the US military with. But, I doubt that he had one for 7.7 Japanese at the show. Significant changes are the improvement of the rear sight. Designed in 1939, then produced and fielded from 1941 to 1945, the Type 99 was the most common Imperial Japanese service rifle of World War II and second most produced Imperial rifle with 2,500,000 built. I saw a guy offering various inserts at one of the last gun shows that I attended. Chambered in 7.7×58mm Type 99, later rimless variants of the Type 92 and 97 cartridges also usable. Interesting that ACO mentioned the chamber insert using the 7.62 x 39mm cartridge. I got ahold of one of the 7.7 Lee loaders, reloaded some of my precious Norma brass with DuPont 4064 and Hornady. I won't say it was in mint condition but I don't think it had ever been fired. When production had been scattered all around and many makers were doing them.
TYPE 99 ARISAKA AMMO SERIAL
The late war 7.7 I had was fixed peep sight, wooden butt plate, three digit serial number. Nobody is making rifles in 7.7 anymore, therefore demand will continue to diminish. It will get harder to find and more expensive as time goes by. If you think this stuff is hard to find and expensive now, wait a while. Norma still makes ammo for it, it's still expensive. Or you can buy newly made cases from Graf and Sons. You can do it with just the sizing die that comes with a 2 die set of reloading dies. Not many stores see enough demand to stock it.
Personally, I vote for the string test with a proper 7.7mm round. 30/06 and the bullet was a tight fit at the muzzle. I had an Arisaka sporter awhile back rechambered for. I think OP won't have much choice but to pay shipping for 7.7. Some of the early Type 99 barrels are bored a bit smaller and give decent accuracy with the oh six round.
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