Have had a pre-64 (57 irrc) in 308 WIN and a 1968 in 243 WIN, another in 284 WIN - those are all gone. I have kept (since 1995) my favorite, a 1963 in 308 WIN that has an early post 64 stock. As I acquired it used from Shumer’s in central PA in 95 I have no idea of how it came to have a 64 stock on a 63 rifle. This one has a good trigger, all the others were heavy and gritty. Loves a 165 grain Interlock over IMR4064, won’t shoot a 150 grain bullet worth a piss. One of my two favorite deer rifles of my hunting career.