The rim makes it less of a bolt gun cartridge. The .30-30 was designed for the 94 Winchester and it's the guns that have made it so popular over the years, not the stellar performance of the round, itself. The guns are light, handy, quick to the shoulder, fantastic in woods hunting and that flat point bullet performs on game above all logic. It is quite a good deer gitter and if it's wounded game, it wasn't because of the cartridge. I doubt the wounding rate is any greater for the .30-30 than the .30-06 where deer is concerned. If you hit the boiler room, it works.
However, I have to agree that if a guy wants a hunting rifle, a bolt action hunting rifle, why go out of your way to find an old beat up 340 Savage when you can get a new compact short action in .308? If you want less power, just load it lighter (I'm a handloader, I'm sorry if you're not). The .308 isn't excessive in recoil, is an inherently accurate round, and fires a 150 grain spitzer bullet at 2800 fps or so from a 20 inch barrel. That velocity is SIGNIFICANTLY higher and energies WAY higher than the 150 grain .30-30 typically at around 2200 fps in factory loads. My handloads will push it to about 2400 fps and I can handload a spitzer boat tail which wakes it up. Sure, with a Nosler ballistic tip, I can make the .30-30 easily a 300 yard hunting round, but I ain't goin' out of my way to find a bolt gun for it when I have a perfectly good (in fact I love the thing, my primary gun) M7 Stainless Remington in .308. The .308 is readily available in a very handy little light weight bolt rifle from multiple manufacturers. The .30-30 remains as ever a lever gun round, nothing wrong with that, but that's what it is. Another thing about .308, I can get bulk military brass from Midway CHEAP!
If you find an old .340 Savage or maybe a 788 Remington in .30-30, I can tell you, it's an effective medium game rifle and can be loaded to much more impressive performance than some would have you believe the .30-30 is capable of just by using Nosler Ballistic Tips, but if I were looking for a hunting rifle in a short .30 caliber, why waste time looking for 30 year old or older beater when I can get a new rifle now in .308? If you have the answer for that, fine, but to me it's not logical.
Now days, even if you're not a handloader, you can get that Hornady Leverlution stuff for your 336 Marlin and get the most out of a .30-30 with a handy little lever gun even without handloading. The .30-30 is a great old round even today and Hornady has given it a new lease on life, but I see no great market for it in bolt guns, probably why there's none built today. The main reason the round was chambered in the Savage 340 in the first place is that the Savage was a low end gun and couldn't handle the pressures of a higher pressure round like the .308. It had one locking lug and the action was more Mannlicher than Mauser in design with the bolt acting as the safety lug. The 788 was a stronger gun and was chambered in .308 so the .30-30 in that rifle always sort of baffled me. Indeed, it didn't sell well and didn't last that long in the 788.
All JMHO. Don't think I'm badmouthing the .30-30 'cause I've always appreciated the round. I liked that old Savage, bought it when I was a teenager and didn't have the cash for anything higher priced and it sure was a good little rifle for me. I still load and shoot .30-30 in my Contender and it makes a dandy Contender round for deer and hogs, need nothing more, and it's easy to shoot compared to some of the cannon rounds the Encore is chambered for or the .45-70 which is a bit much unless you're after Moose or something. But, I've moved on with my bolt guns. I have my old .257 Roberts in an old M722 Remington (MUCH finer gun than a 788 ever dreamed of being), my Savage in 7mm Remington Magnum, and my M7 in .308. The Remington is all I use now days. I feel all my bases are covered with what I hunt or may hunt as far as bolt guns are concerned.
Oh, BTW, the statement that the 7.62x39 is MORE powerful than the .30-30 is bogus. In fact, the .30-30 is capable of more energy shooting a heavier bullet. The 7.62x39 is close, but no cigar.
I have a couple of SKS rifles, one I sporterized with a scope and such. I don't know, I just got carried away sporterizing it. I have it set up for night hunting hogs now, lighted reticule scope, spotlight mounted on it. It's okay to 100 yards, but only shoots about 3MOA, not even close to my bolt guns and not really competitive with a good lever gun in .30-30. I really only have it because it was cheap ($75) and was fun to dress up. As a useful hunting tool, it isn't really that great.