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[–] SayTan 0 points 1 point (+1|-0) ago 

Thinking about it, swaging a 7.62 down to 6.5, when fired, would be more accurate than 7.62 in a 7.7 bore, provided the action holds. ;-)

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[–] shitpostfacto1 0 points 1 point (+1|-0) ago 

No doubt! I understand P.O. Ackley did some blowup tests with Arisakas and was impressed with their ability to swage down oversize bullets without coming apart. I would hate to be the poor slob that fired a .30-06 with a 6.5 bore though!

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[–] SayTan 0 points 1 point (+1|-0) ago 

One of my friends owns Ackley's rifling machinery.

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[–] SayTan 0 points 1 point (+1|-0) ago 

There is a really easy way to check. And, FWIW, .303 is actually 7.7, if he had had the 7.7 rifle. .30-06 is undersized in a 7.7 bore.

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[–] shitpostfacto1 0 points 1 point (+1|-0) ago 

Yes, the only way I can imagine it happening would be just sloppiness and assumptions. My wife hunts with a Mauser 8mm-06 and loves it. That cartridge came about when guys brought home Mausers and couldn't get 8x57 ammo. .30-06 brass was plentiful, so they had the chambers reamed out with an 06 reamer and came up with 8mm bullets. It is a pretty painless wildcat, just run the brass through the 8mm-06 resizing die, no fancy forming or multiple steps. With the 7.7 Arisaka, it seems like the best option would be just to form cases from .30-06 brass, but I wouldn't be surprised if someone tried a 7.7-06 wildcat. As far as the 06 reamer in the 6.5, that had to have been just a screwup. I saw a couple of 6.5-.257 Roberts Arisakas in a pawn shop a couple of years back. That was probably a work around to poor ammo availability just like the 8mm-06. If they came with dies, I might have bit, it probably wasn't a bad caliber and they were dirt cheap.

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[–] SayTan 0 points 1 point (+1|-0) ago 

My mausers got new barrels and became better things, albeit I bought them as bare Brno war production actions.