Gotta agree, it's a hellofa caliber and sixgun but only if you reload. Take the plunge and get set up for loading your own, you'll never regret it. I've owned two NM BH's over the years, one standard 6-1/2" bbl'd model and the other is one of my pride and joys...a Flat Top 6-1/2". Both are more accurate than I can hold with my own loads, and run well from 750 to 1350+fps. And my Smith M57 is equally good.
Cast bullets from straight wheel weights are good up to ~1100 fps, but beyond that, in my experience, a gas check is necessary, and therein lies the problem...in the past, GC's that fit have been virtually unobtainable. Jacketed bullets, on the other hand, are no problem with Hornady and Speer offering good designs. My current favorite, Hornady's excellent 210 gr XTP, will easily drop 6 of them into a nice tight cluster of less than an inch and a quarter at 25 yds. It's my deer load and clocks 1325 fps over my PACT chrono. And while I've yet to get my winter's venison with the .41, I'm confident that it's got all the punch I'll need.
Cases, locally here in Louisville KY, have been available at the twice yearly big gun shows. Primers are a non issue as well. For powder, I've yet to find a caliber so adaptable; Bullseye, Win 231, HP38, Unique, Herco, 4227, H-110, Win 296, and 2400 have all done well for me over the years.
So...I'm a fanboy of the great .41 Magnum...great in Rugers, as good in S&W's M57...it's one of my three favorite calibers...Here's a pic of the Flat Top...the other is of a representative tgt shot with the standard model.
Best Regards, Rod