7.7 Jap from 30/06 cases

[sigman2]

Hi folks,

I have a Type 99 that I want to reload for. Is it ok to form 7.7 from 30/06 cases? I made up 20 test loads and fired them yesterday. Accuracy was good. I did notice a little case expansion just above the case head due to the slightly larger chamber dimensions. Same as when I used to form 6.5x55 Swede from 06

The load was:
150 gr. .311" Prvi SPBT
40.5 grs. IMR 4064
WLR Primer
Cases from commercial 30/06
COAL 3.00"

Any comments or suggestions?
Any favorite loads?

Thanks

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