A couple weeks ago I purchased a very rusted Remington 742. It has someone's initials and some totemic animals etched into the stock, so a local who might be less PC than me would call this an Indian gun (but I will not). I think I pick up a gun like this because I feel sorry for it. And I have done it before, and it works out well. My first effort at removing external rust revealed the caliber to be 6 MM. I have been unable to remove the bolt and action bar from the receiver even though it cycles fine. Does anyone know how to remove the bolt on a 742? Also, other than .244, does anyone know what other calibers might work for a replacement barrel given this bolt face (in the event a barrel in another caliber comes along before one in 6 MM/.244 comes along as this barrel is too far gone)? Thanks very much.