I'm not sure what the value would be because I haven't found one. If you figure out what you need on it, let me know. I am looking to rebarrel a 300 Savage I have.
A collector will say that a rebarrelled gun is not worth the same as a factory model supplied in that caliber. I am looking for a barrel to set up a good shooter. I view the 358 as a great deer/bear load at reasonable distances.
Ammunition is a little more challenging to get but the round is a fine one in my eyes. If you want to sell it, figure out a price and let me know how I can get in contact with you. :-)