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303/30-06 wildcat ?

338magnut338magnut Member Posts: 722 ✭✭✭

I recently bought an odd lot of ammo and there was some 30-06 cases shortened to 308 length and necked up to 303 and was wondering if anyone has heard of these or just someone experimenting. Any info is always appreciated. Terrill


  • BobJudyBobJudy Member Posts: 5,927 ✭✭✭✭

    That's one I never heard of. Maybe someone needed to clean up a 303 chamber and used that reamer to do it. Then used the .311 303 bullets so they would fit the bore. Kind of a backwards way to do things because .308 bullets are a lot more available in various forms and weights than .311 bullets. To each his own I guess. Bob

  • navc130navc130 Member Posts: 1,092 ✭✭✭
    edited July 2022

    In the "old" days it was common to reform 30-06 cases to 7.7 Jap when the Jap ammo was not available or hard to get. A knowledgable home gunsmith could remove and shorten the 7.7 barrel chamber, rechamber to .308 or .300 Savage and then reload the .311 bullets. A lot of trouble but it gave you a shootable rifle.

    I once loaded some 150 grain 30-30 bullets in my 7.7 Jap Sporter and it shot very well at 100 yards. Groove diameter was .312.

    I agree with Mobuck, The most logical answer - 7.65 Argentine.

  • yoshmysteryoshmyster Member Posts: 19,954 ✭✭✭

    Another reason why I never bought guns that shot "exotic" rounds.

  • MobuckMobuck Member Posts: 13,176 ✭✭✭✭

    Someone 're-purposed' 30/06 cases into 7,65 x53.

  • varianvarian Member Posts: 2,253 ✭✭✭✭

    i agree with what Mobuck said, have done that myself.

  • 338magnut338magnut Member Posts: 722 ✭✭✭

    My curiosity satisfied and a thanks to all who replied. Terrill

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