There have been so many cartridges come and go over the years for various reasons, mostly due to them becoming outperformed by newer more advanced cartridges. What's a cartridge that was once popular that you would like to see make a comeback? Or that you feel still has a place despite being outdone by other cartridges of similar type. Be it a comeback to the mainstream or one that isn't really used like it was 100+ years ago. For me it would be the 32-20 or really any of the "two numbered cartridges" (25-20, 44-40, 25-35, etc.) with the exception of 45-70 obviously as it seems to be quite popular.
.256 Winchester magnum 7-30 waters 30 carbine the first two mainly because I would like more brass with proper head stamp. The last because it was grossly misrepresented by those coming back from war. It sucks in the role it was put in, but in any other light it is great.
As an owner of a .32-20 revolver, it would be nice if there was a greater variety of ammo available. The problem is that it is such a "niche" gun that it isn't financially viable. And, as it is a relatively low-powered round, increasing the power of the cartridge isn't advisable considering there are a fair number of older guns out there that might not be able to safely handle that increase. Ammo makers liability prevents them from making better ammo because of the limitations of those older firearms.
25-20. I've got three, two oval port savages and a Remington model 25 pump. The latter is a joy to shoot. It holds ten rounds and is often mistaken for a .22 at the range. It looks like a model 12 slightly scaled up....which is pretty much what it is!
In semi-autos, I'd like a better selection of 38 Supers. In revolvers, I'd sure like to see a few more 41 Magnums to choose from. I'm pretty well satisfied with the variety of rifle cartridges out there. Although, like Poper, I'd like to see the 38-55 become more popular. I'd probably buy a 38-55 just to have around.
.32 H&R magnum. 6 rounds in a very shootable pocket-sized small frame revolver. Decent, if hard to find, self defense ammo, and also shoots .32 S&W long or short for practice or plinking. Would like to see S&W make another airweight J-frame in this caliber, and better ammo availability.
Yeah, I'd like to see a J-frame Smith in 32 H&R too. But (as you've probably heard a thousand times) 32 H&Rs are a real joy to load for, you know.
More 32mag or .327's, more 41mags and more things in 7.62-25 Tok. Sadly, given the current situation I would like to see 9mm make a real comeback!
Mmm. I'd like to see the .44 Spl come back big-time. Something along the lines of a 5 shot L-frame (perhaps a K frame, *maybe*), with a round butt, 3" *heavy* shouded barrel, and fixed sights. Similar to the Mdl 13 the FBI issued, but in a 5-shot .44 Spl chambering.
7.62x54r. Not that I think it's got much benefit over some other .30-caliber rounds, I'm just a fan and would like to see it in more guns. And the extra variety in modern loads that would bring would be nice.
Ditto on the .30 Carbine. Nice handy little smokepole for just wandering around the fields and forests. Easy to shoot, just enough "kick" to be satisfying, and at times in the history of the world, cheap to buy and cheap to shoot. But it was not a Garand or an M2 or a BAR or an '03 or an SMLE or a Thompson. But because of the friendly qualities I mentioned, a lot of them were at the front, where they were unfairly compared with the more powerful arms. It was meant as a rear echelon substitute for the issue pistol. And our National Forests, Grasslands, and North 40 woodlots are decidedly rear echelon. Afterthought: At least until the election. Terry, 230RN
Speaking of .30 Carbine, my local Academy Sports & Outdoors always (not now of course) has PPU 110 grain SP, PPU 110 grain FMJ, Hornady 110 grain FMJ, and Aguila 110 grain FMJ ammo in stock and has high demand. So it might just be fair to say .30 carbine has made a bit of a come back, or at least here.