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  #1  
Old 01-14-2013, 12:06 AM
johno johno is offline
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Default O/T re 7.62x39 Improved

I know this isnt small cal, but I value the knowledge here.
Firstly its a CZ. Icve been looking at varrious improved cases, so far the best seems to be simply running a 6mm PPC reamer 0.125" deeper. Therby keeping the short neck and increasing powder capicity. I am told this will result in approx 10% increase in velocity & a pretty simple task to carry out

If I were to this would it work by simply getting the neck of 6mm PPC die ground out to take the x39 case neck? Maybe a Lee collet die in x39 would still work. Appreciate any ideas

Johno
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  #2  
Old 01-14-2013, 12:33 AM
Spook Spook is offline
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7.62 Covert gets you a smidge more, uses 7.62 X 39 brass or Grendel, 6.5 Gren dies with appropriate neck size bushing and button. seats with standard 7.63 x 39 or Horn 30 cal seater. Headspace is the same as Grendel or 6.5 LBC.

Considerably faster than 300 blk with the same subsonic capability's.
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  #3  
Old 01-14-2013, 09:38 PM
johno johno is offline
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Thanks for the tips, do you think a standard x39 collet die would still work on the improved case?

Johno
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  #4  
Old 01-14-2013, 11:00 PM
Spook Spook is offline
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yes, nicely.
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