An uncle gave me a Win model 70. It is post 64 and has a bull barrel with 1 in 12. The barrel is marked .222, but it was rechambered for 223. It does chamber a factory 223 round. It has a pretty good trigger and the bore looks good. I was thinking of making up a BUNCH of rounds for a Pdog shoot in SD. I have a virtually unlimited supply of once fired Rem brass...Any suggestions on loads?