Thread: 7.7x58 jap ammo
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Old November 3, 2012, 04:53 AM   #13
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Join Date: May 25, 1999
Location: Too close to Houston
Posts: 4,143
You'll probably want to slug the bore. Mine is 0.313" but shoots Hornady 174gr .312 bullets well.

If your gun is a rechambered 7.7 it will probably shoot .308 bullets okay (if 3-4" at 100 yards is acceptable). If it was mine I'd load .312 bullets in .30-06 cases.

If you load .312 bullets MAKE SURE the neck area of the chamber is not pinching the loaded cartridge by painting a loaded round with magic marker and inspecting it for drag marks and such after chambering it a couple of times. Arisakas are tough, but not that tough.
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