None of them seem to be made for shooting lead bullets. You need a customized gun, seems to me. Please enlighten me otherwise.
Here's your enlightenment.
There are no revolvers that are not "made for shooting lead bullets". In fact, there are some revolvers that require only lead bullets (balls).
There is only one handgun I know of, currently that REQUIRES jacketed bullets, and the maker is very clear about that. The Desert Eagle, due to its gas system is not for lead bullets.
Some combinations of cartridge and gun do not get peak performance from lead bullets. Some do.
You don't need a custom gun to shoot lead bullets. (You might want to get some work done on a particular gun to optimize it for a particular bullet, but that is a specific case.) Most folks customize the ammo, rather than the gun.
Everything has limitations, and frankly, capacity beyond what you need and use is wasted. Nice to have, IF you ever need it, but only IF you need it.
The .44 Magnum was designed around shooting 240-250gr lead bullets. Does fine with jacketed ones, too. The current popularity for shooting heavy / long for caliber bullets is a relatively new thing. And the opinion that these bullets are needed, and, conversely that the standard weights are ineffective is an internet fiction.
If you want to shoot ammo that does not fit in a S&W, don't BUY a S&W. It's really that simple.
Sure, Rugers are stronger than S&W, but if one fails at 15% overpressure, and the other at 27% (numbers for illustration only) is there a practical difference? The absolute strength to fail is, and should be a moot point for the gun owner.
DURABILITY, on the other hand, can be a concern. And on that matter, opinions vary widely. Some seem to believe that no matter what, and home many you shoot out of it, the pistol should last forever with no repair / maint. needed. And if you don't get this, the gun is somehow inferior.
Others recognize that the guns are machines, and machines that operate wear. If you haven't paid for the gun several times over in the cost of ammo before it needs a tune up, then you have something for concern. Otherwise, in my opinion, you don't.