There are plenty of rifles, including the Handi-Rifle and T/C Encore/Contender in 357, 44, 444, 45/70 etc.

If you start talking about rechambering anyway, a few of the other calibers can be easily chambered in existing single shot rifles a lot easier than rechambering a lever action. You can rechamber a single shot 357 to 357 max at home in an hour or so!

BW