I'm in the same boat....
Sportsmans Warehouse (Idaho Falls) has some 300 and 338 REM @ about 0.50 ea.
D&L has 300 RUM Federal: 300 RUM New Brass
I notice that RUM brass is getting harder to come by [img]/ubbthreads/images/graemlins/frown.gif[/img]
Is it a good idea to use 300 RUM brass and resize it for all the other? But then how would a fella keep from getting all mixed up?