Thread: 7.7x58 Jap
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Old April 19, 2018, 05:04 PM   #13
eastbank
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Join Date: February 7, 2008
Location: pa.
Posts: 2,450
neither were made for the reloader in mind as they were war rifles. but with the bring backs and later imported by the thousands and cheap, they were sporterzied into hunting rifles and some of the 7.7,s were converted to 3006 necked up to the .311-.312 bullets. the 99 Japanese rifles can be loaded up way more than the british mk-3-4,s by a lot(rear lug verse two front lugs also the 99 handles gas better). I have several of both and they are in ex condition that I reload for and believe me the mk-3-4,s is nowhere as strong at the 99 Japanese. in the mk-3-4,s I have found that the chambers are over size and some by a lot and you must be very carefull when sizing the cases as they separate quite soon 2-3 loadings.
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