I have an M44 6.5", and have been very happy with it. I changed the long skinny factory grips over to hogue monoblocks ala S&W, polished the action contact surfaces, and put in a wolff spring kit, it has close to a perfect trigger now. I have never had any problems of any type, and it is always been quite accurate, and was a good bargain. The expansion chamber and porting seem to work best with hotter loads, and this revolver handles just about any SAAMI spec load with ease, the only downside is fairly rough machining marks internally and in the expansion chamber (doesn't affect function, and not normally visible), and a gritty NIB trigger, both can be corrected with a polishing stone, dryfiring practice and time. Some advantages over S&W (which I have loved until their more recent models) are a better designed internal lock, longer firing pin (allows lighter hammer springs) the finish on some models and of course the cost, now if they could only ditch the giant cheesy banners they put on the side of most of their models they would be near perfect.