Oh hell yeah! As my screen name tells ya , I'm a big .41 Mag fan , but my real 'cult' cartridge is my .401 Herters PowerMag. The guns are a bit odd , but there's no denying the quality that the grand old world gunmaker J.P. Sauer & Sohn are famous for. It's at least as srtong as the legendary Ruger Blackhawk. It seems that original brass and ammo is scarcer and most valuable than the guns. I was fortunate to have found several boxes of original unprimed brass some years back. Bullets are another problem. Hardcast bullets meant for the 38-40 WCF can be used. Occasionally , Winchester releases some of their .400dia 180gr JSPs. Modern jacketed bullets for the 10mm auto can be used if ya run them thru a C-H cannelure tool. 10mm carbide dies work just fine too.
I bought this one about 15yrs ago. Original box , receipt and half a box of the ammo bought with the gun. Have another that's kinda beat up.