6mm Remington
WKR
Pre 64 Model 70 in great condition - WOW!
257 Roberts is a fantastic cartridge for coyotes, deer, antelope, black bears, Bighorn sheep, etc. I'd shoot the ammo that you have and see how it works. If you don't reload, you should get into it. It's a lot of fun and working up a load for your special rifle is the way to go. A 110 grain Nosler Accubond would be a superb bullet for anything you are going to hunt with it.
I would give the rifle a good cleaning before I shot it or used it. That's a real treasure that begs to be hunted with. Use it and love it.
257 Roberts is a fantastic cartridge for coyotes, deer, antelope, black bears, Bighorn sheep, etc. I'd shoot the ammo that you have and see how it works. If you don't reload, you should get into it. It's a lot of fun and working up a load for your special rifle is the way to go. A 110 grain Nosler Accubond would be a superb bullet for anything you are going to hunt with it.
I would give the rifle a good cleaning before I shot it or used it. That's a real treasure that begs to be hunted with. Use it and love it.