Same goes for .300 WinMag brass. It's impossible to find right now. I have considered attemping at making some .300 WM brass from 7mm STW brass, but so far haven't had the time to try it.
They also have hornday 300 mag for $48 50 count if u need brass go to ammoseek.com go under reloading and pick the caliber your looking for and hit search if its in stock it should find it. Hope this helps..good luck
The last few hundred I got was from shoot-long.com. Send him an email. He's Tikka lover on here. If he doesn't have any he'll let you know when he does
I bought 120 rounds of Remington 200g A frame loaded ammo to 220$ . I was looking for brass and not finding any Remington brass. There seems to be a fair amount of Remington ammo for 35$ a box or so.