Yes, that swap can be done safely on your reciever, both the .223 and 7mm-08 barrels are not preceeded by an asterick in the barrel accessory list so they can be safely fitted and fired on the same reciever. Now just find one and buy it and we will walk you through the fitting process. If you can buy with the option to try it for fit first thats great, otherwise don't worry about it, buy it for a reasonable price and try it on your reciever, if it is one of those extremely rare ones that are not capabe of being fitted to your gun just sell it to someone else who's gun it may fit better. After you get a barrel post again and many here will help you through the fitting process. You might try a WTB (want to buy) in the clasifieds...Good Luck....<><.... :grin: