Jap ammo 6.5 x 51

[dlumpkin]

Hello, my name is dlumpkin, am trying to find jap ammo 6.5 x51. Have tried 6.5x50 it blew primer out ,6.5 x52 bolt will not close ,have tried ammo sites no luck.

Information

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[jonnyc]

There is only one caliber of 6.5mm Japanese ammo. Perhaps you have tried to chamber 6.5mm Italian, Swedish, Dutch, or Greek? Do not try to load a bag of gunshow reloads or mislabeled rounds into your rifle, only clearly marked, new factory 6.5mm Japanese ammunition.

[Eaglelord17]

I would bring your rifle to a gunsmith if you are unsure of the caliber. It may have been converted to 6.5x.257 Roberts which was a common conversion done in the 50s to these rifles.

[WarPig1976]

Friend, You need to STOP and figure out what your dealing with instead of shoving any old cartridge in your rifle. You could wind up blowing the side of your face off, losing half your hand or maybe just a few fingers and an eye. worst of all you could hurt the guy next to you. Get the picture?

[vintage hunter]

There is only one caliber of 6.5mm Japanese ammo.

There seems to be some confusion as to the actual case length. Some sources show it as being an even 2'' or 51mm( Lyman 43rd edition) while others show it as being 1.984'' or 50.3mm( Hornady 4th edition & Sierra 5th edition). New unfired PRVI cases measure 2'' in length and are even headstamped 6.5x51R. These dimensions only pertain to the case OAL, all others are the same regardless of source.
[quote=Eaglelord17;330300]converted to 6.5x.257 Roberts
Quite possible. They don't turn up often though, I've seen two. Both were carbines.

[Parashooter]

I haven't examined other 6.5 Arisaka chamber casts, but my Type 38 features a "stepless" chamber/throat transition that would allow considerable tolerance for case length. Distinctly odd in comparison to typical European and American centerfire chambers -

Attachment 62214

[Bruce McAskill]

The only military 6.5x50 is the 6.5 Japanese cartridge. Were the rounds fired factory 6.5x50 or something else? If these are factory rounds that you fired and they blew out a primer then you have something wrong with the barrel of the rifle. If the barrel was just cut to .257 Roberts then the round would not have blown out the primer. If the barrel is original then there is obstruction in the barrel causing pressure to rise blowing out primers and it should be checked by a gunsmith.

[303tom]

Sounds like head space to me, find your self a good Smith !................

[dlumpkin]

gunsmith said it was 6.5x51 can not find ammo

---------- Post added at 10:21 PM ---------- Previous post was at 10:20 PM ----------

yes they were 6.5 x50 factory

[303tom]

Can we see a picture of the rifle ?...................

---------- Post added 04-26-2015 at 12:01 AM ---------- Previous post was 04-25-2015 at 11:55 PM ----------

gunsmith said it was 6.5x51 can not find ammo

---------- Post added at 10:21 PM ---------- Previous post was at 10:20 PM ----------

yes they were 6.5 x50 factory

Actually if you round up the 6.5 jap. it would be 51 ie 6.5x50.8 !............