whatidooutdoors,
Your final comment is "If the round is so popular, why would you not produce more? Just a thought.z'
The thing is, is it seems like its more popular, but by economy of scale it's not. From a sales perspective (which I was, and still am, an on the road sales guy, selling to the actual retailers), most dealers buy 10 times more of lets say 300 Win over 300 Rum. Sometimes there's even more disparity between the cartridges then that. If you were Federal Premium, and the orders you received for most calibers outweighed others by large margins, how much would you produce of the less popular cartridge? When you're looking for something it can seem its crazy popular, but if you could see overall sales numbers, you'd understand what I'm saying. In the overall year, calibers like the 300 Rum sell very little compared to a lot of the other calibers, therefore it gets produced less. Add this to the scenario we are coming out of where ammo WAS very hard to find. Nobody's completely caught up, so some of the harder to find calibers can still be tough to find. Once everything gets completely caught up again (which it will even though the naysayers doubt…) it becomes easy to find because it doesn't fly off the dealer shelves every time it comes in. It get's to a point sometimes where it's actually easy to find.
I hope this all makes sense. I know it seems backwards in a way, but I can tell you after being in sales in the outdoor industry for 25 years, this is pretty much the way it is. Things that seem hard to find are often caused by the retailers themselves ordering very little of it because they don't see it selling fast off their shelves.
Hope this helps explain it.