Load Data for 7.7 Jap


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myhandle87
October 1, 2009, 02:11 PM
Does anyone have some useful 7.7 Jap data? My handbook doesn't cover it.

I need OAL, trim to length, and powder charges for IMR 4064. Any info would be of great use.

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rcmodel
October 1, 2009, 03:04 PM
Hornady #6 manual has 150 & 174 bullets with 8 powders each.

Hodgdon 2009 manual & website has 150 & 180 bullets with 7 powders each.

http://data.hodgdon.com/cartridge_load.asp

rc

R.W.Dale
October 1, 2009, 03:07 PM
When all else fails I use much more common and up to date 303brit data if need be. If course start low and work up.

myhandle87
October 1, 2009, 04:21 PM
Thanks folks, does anyone know the trim to length? I'm making the brass from 30-06 brass so that's pretty important....

rcmodel
October 1, 2009, 04:29 PM
According to Hodgdon it is 2.260".

Hornady says MAX case length is 2.270".
Trim to length is 2.260".

rc

Kernel
October 1, 2009, 08:17 PM
According to my mystical modified Powley Computer, IMR 4064 is about the perfect powder for this cartridge. Good pick.

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