Guys, I'm kind of an ignoramous when it comes to the big thumpers that you are accustomed to. I have a real nice Ruger 77 in 7mm mag that I just picked up for very little jingle. I'm bettin that JES could rebore that rifle to 358 without much effort. My question is that all a 358 Norma is? Just a standard magnum that was derived from the H&H case necked to 358 as in a 7mm mag necked up?