Adg and Lapua have been adding belted magnum cases to their production. Far from dead.
I’m sold on them. I am actually now thankful to Norma for canceling RSAUM brass. Don’t get me wrong, I still will never buy their brass if there is an alternative, for doing it. I was so invested in the Saum that their move prevented me from picking any follow on, including the 300 WSM, that relied to any degree on their production, and I sure wasn’t going to repay their dropping my short mag, with me buying over time many thousands of their survivor, to be in the same place.
But, Norma’s move, along with the existence of Hornady’s 250 A-Tip (and the rumored 245 Berger) spurred me away from short mags altogether, and 7mm’s in LR, and for that I’m glad.
I did have to choose between the belted WM and Hornady’s PRC, when intending to shoot the 250 A-Tip, also made by Hornady.
Initially, I was concerned that the PRC may not be as permanent as the 300 WM, which was a non-negotiable when replacing the truly defunct, Lapua-eschewed saum, but then Mark at 4AW made it pretty clear that the WM is actually less peaky than the PRC with ultra heavies, attaining higher velocity from a long column, and that sealed it.
Belted is definitely not dead to me, 800 Peterson L, 300 Lapua, 300 ADG, and 100 ABM, to get started with eight 8 twist 5R’s in my first year with it.
It’s pretty clear the Hornady PRC line is here to stay, but I’m WM at this point. In fact, Hornady’s PRC line, which all the brass makers jumped on, has pulled in leading Open shooters. Yes, sshhh, that 6.5 PRC
is Hornady’s cartridge, necked to a 7 or not.
I don’t know how much the belt has to do with it, but this is the least “growy”, best pocketed, and most interchangeable gun to gun brass I have used in Fclass. It just doesn’t need to be resized, any of it, amazingly. I don’t know what the pressure of ~73 plus grains of H-1000 is with a 250 in an 8 twist, but there are no pressure signs on the head, and more than 1,900 FPS at the target is common.
If the 300 WM didn’t already exist, and was introduced today, it would still be the best choice for a current class of heavies that it wasn’t made for. Bigger, like the 30-378, is possibly too hot for string fire.
The thinking that all cartridges need to be short and fat, after many generations of long columns working very well, I think should be rethought. Fast combustion is hard on brass. I’m at a loss as to why it was ever important to burn powder in 24 inches and carry around only short actions, and short rounds.