Thread: 7.7x58 Jap
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Old April 20, 2018, 06:43 PM   #17
eastbank
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Join Date: February 7, 2008
Location: pa.
Posts: 2,450
as the 8x57 has a .323 dia bullet and the 7.7 has a .311-312, fire forming a 8x57 in a 7.7 would not be a good idea. I use 8x57 empty cases to make 7.7 Japanese by full lenth sizing empty 8x57 cases in a 7.7 sizing die, as they come out they can be loaded with .311-312 bullets and used with moderate loads.
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