I had a Hawes single action revolver made by J.P. Sauer & Sons in the early 1970's. A Guns and Ammo Magazine article dubbed them "the poor man's commemoratives" because they available in versions combining brass backstrap, rosewood grips, nickleplated cylinder, and high polish blue. Calibers were .22 LR/.22 WRM, .357 Magnum (mine), .44 Magnum, and .45 Colt. They were advertised as "Silver City Marshal", etc.
The frames were simular to the Colt SAA size, but the cylinders were larger diameter. Centerfire versions were steel frame & cylinder, but the rimfire versions had zinc alloy cylinders with lined chambers. The frame mounted firing pin was always sticking and locked up a fired case. The front sight came loose, and the cylinder quickly developed endshake.
I thought the cylinder lining was to reduce weight, not because the centerfire guns were converted to rimfire. Never heard that before.
The trigger and hammer notches on the sample I had wore quickly to an unsafe "hair" trigger. I asked a gunsmith to rechamber & rebarrel it to .45 Colt and he refused. The guns apparently did not last long because the importer Hawes went out of business in the late 1970's. It was a modestly priced gun, and only "okay", but did not equal the Colt product.