Over the past month I have been going nuts trying to find reloading components for 6.5 rem mag, especially brass at a reasonable price. It seems that alot of places either don't carry it, or can't get more supplies. Rumor has it that 6.5 rem mag brass production will only take place once a year, for a limited time. I now have plenty of emptys, and I have a place where I can get more, for now. But I have to make up my mind about whether I have enough forever or not.
I have found brass for as much a 55 cents a piece at my local gunshop. He could only get 300 emptys, and had to split them up between a couple of customers. I found 3 bags at Cabela's for an average of 43 cents a piece and bought them, but when I asked the employee when they will get more in, he looked in the computer and said "we won't, it's been discontinued .
Even getting Dies has been an adventure. So far they are available as a special order, at somewhat of a premium price. Cabela's DOES NOT carry 6.5 rem mag dies. They sold the rifles, the empty brass, and everything else for reloading but the dies. Which didn't sit too well with me.
This leads me to believe that the bath Remington took re-introducing the 6.5 mag in the 673 guide rifle didn't go over too well. And, as of now, I doubt this caliber will ever show up again in the future.
I also believe that the 350 mag may be in the same boat. If you have either of these two calibers, I suggest you buy all of the brass you can find, and an extra set of dies.