7.7 Jap Bullets

7.7 Jap Bullets for Reloading

The 7.7x58mm Arisaka (aka 7.7mm Japanese or 7.7 Jap) was the standard rifle cartridge for the Imperial Japanese Army's Type 99 rifle Arisaka. Americans naturally got a front row seat to this cartridge’s performance in the Pacific Ocean theater. We also rechambered approximately 130 thousand Type 99 rifles for 30-06 during the Korean War, although it appears few of them were actually used in combat.

Military surplus 7.7x58mm Arisaka ammo has always been a rare commodity even immediately following the war. Fortunately this cartridge takes the same .311/.312 bullet as the 303 British, thus letting it piggyback on the demand for the more popular round’s components. A ball 7.7x58mm Arisaka cartridge would have had a 175 grain bullet, which the 303 British Mark VII projectile is only one grain lighter than. So similar are the two rounds that you may even carry over 303 British reloading data to the other. With the correct expanding bullet you’ll find that your Type 99 rifle is just as handy for taking whitetail as it would have been fighting for Emperor Hirohito.

Several manufacturers offer new brass for the 7.7x58mm Arisaka, although the especially thrifty can take their time to reshape 30-06 or 7.92x57mm Mauser cases.

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2 product(s)

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  1. Hornady .310 Diameter Bullets - 174 Grain FMJBT - 100 Count

    $29.75

    In stock

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    Cost Per Bullet 29.8¢ per bullet
    Bullet Weight 174 Grain
    Bullet Caliber 303 Brit, 7.62x39, 7.7 Jap
    Quantity 100
    Bullet Type Full Metal Jacket Boat Tail (FMJ-BT)
    Manufacturer Hornady
    Manufacturer SKU 3131

  2. Hornady .312 Diameter Bullets - 150 Grain Spire Point - 100 Count

    $33.00

    In stock

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    Cost Per Bullet 33.0¢ per bullet
    Bullet Weight 150 Grain
    Bullet Caliber 303 Brit, 7.62x39, 7.7 Jap
    Quantity 100
    Bullet Type Spire Point
    Manufacturer Hornady
    Manufacturer SKU 3120

    Customer Reviews

    303 britt

    has been very good for my Mark 303 brit. .312 quality from Hornady. check load data for accuracy

    Review by Michael (Posted on 4/26/2017)

2 product(s)