I have found myself the proud new owner of a Savage Model 99 in 300 Savage. Now, I've got to find a way to feed the thing. I haven't had much luck finding factory 300 Sav brass. I have some 250-3000 brass, but I'm holding onto that in the hopes that I can find a 250 Savage rifle for a reasonable price some day. I probably shouldn't hold my breath on that...
My second thought was to convert 308 brass, but I'd rather not since I have a 308, and the two rounds are very similar in size. Having them both have the same headstamp might not be the best idea.
I thought about 7mm-08, or even 22-250. Well, those are just as easy to find as the 300 Sav brass, so that's not going to work. I could buy some 260 Rem brass though.
Finally, I remembered something while I was writing out this post. I have a box of 6mm Creedmoor brass that I had bought with the intent to convert to 6.5 Creedmoor when high quality 6.5 brass was hard to come by. Well, I found some before I converted it, so the 6mm brass just ended up shoved into some dark, dusty hole under my bench. I'm about 90% sure it's still there.
Is there any reason I couldn't use it to form 300 Savage? The rim and base of the 6mm is about 0.001" smaller than the 300 Sav, though some sources state that the 6mm rim is 0.473" and not 0.472".