Ask any one who has owned a 6.5x55 and harvested game with it , if they were satified with the cartridge and the ease of reloading for it.
The answer is no . No regrets.
The long thin 160 gr bullet is harder to deflect in the woods than the 30 cal. Check out the SD.
It seems to me that your hanging in for another answer .
Well then go for the 30/30.
It is an american round ,and it kills as long as you do your part.
Just like my 6.5x55. It is a over- sea's round granted!
I figure it was better suited to my needs than the 308 W I once owned.
Then experience proved it was the better choice.
Never regretted making that change.