Brass for the .300 H&H isn't all that hard to come by yet. When I bought mine a few years ago the brass was sold as seasonal. I just looked around till I found it. Believe I still have 700 cases unfired in bags. I'll never use it in my lifetime but at least I have it. It was pricey 5 years ago so I can imagine what it costs now.
I doubt you can make brass for this cartridge using anything conventional. I looked that up when I bought mine. There was 1 or 2 possible cartridges that you could use but I don't remember what they were now. I believe Remington sold .300 brass that could be formed into almost anything and the length was good.
I doubt you can make brass for this cartridge using anything conventional. I looked that up when I bought mine. There was 1 or 2 possible cartridges that you could use but I don't remember what they were now. I believe Remington sold .300 brass that could be formed into almost anything and the length was good.