.338 Win Mag
 

I'm preparing to load for .338 Win Mag. I'm currently collecting brass as it does'nt seem to be readily avaiable, and have a question about the brass, Lyman 49 advises me to reload the belted mag cases only a few times, my question is where to look for signs of excessive wear, where will trouble first appear? The loaded ammo will be used in only one rifle, so I plan on neck resizing only. First time I've loaded a belted case, anything else I should watch for?