Do anyone have any info or advice on the Comanche III .357?
There has been some misinformation here, the Comanche of which you ask is NOT the Llama Comanche of some years back. These revolvers are made in Argentina, they are all steel, not real finely finished, but probably a good deal for the money, certainly a better built gun than Charter Arms and for less money.
The Super Comanche singleshot 45/410 is another mater, it does have a pot metal frame but seems adequate for the rounds for which it is chambered. NONE of the 45/410 guns are at all accurate with .45 Colt ammo, that includes Thompson-Center and H&R as well as the Super Comanche, it is foolish to expect accuracy form such a gun. Use it for what it is made for, a .410 pistol, and you'll find the Super Comanche does very well indeed.