these guys have the 300 rum http://www.shilen.com/savageBarrels.html

but you would be better off with one of the short mags. 300 WSM, 300 saum .....

you will need a magnum bolt head to fit the cases

and then because it is a savage when you get tired of that 300 mag kicking your %^$$. For a few hundred dollars you can buy another barrel and drop down to one of the 6.5 mm's and enjoy shooting it.