I own both in 30-30.
The post 64 (1973) is a bit more accurate with the 170 grain WW Power Point ammo I use.
You can tell the deer shot with the 1960 made 94 are deader than the deer shot with the 73 made 94.
I had polished of a pint of Jack after the deer were gutted and hung a coupla years ago and I swear the buck shot with the 1973 rifle winked at me.
Most of the differences are all in peoples heads and don't mean squat diddly in the woods where the bullets meet the bucks.
A lotta media made up hype and BS that was swallowed hook, line & sinker.