Thank you for the suggestion and info. I was using Lee 470 grain target minie, lubed with liquid Alox, with 70 grain pyrodex RS. I haven't yet shot it enough to form an opinion on accuracy. I also tried a few shots with patched round ball, which also hit to the right. Next trip to range I'll try some heavier loads of powder. Perhaps, as you suggest, some particular combination may correct the windage. I was hoping someone had discovered an aftermarket add-on for the front or rear sight. One possibility that I can visualize would be a bolt-on higher front sight, adjustable for windage, that would work with the rear sight in the elevated, long range position. But I'm hoping that somebody has already figured it out, perhaps even 100 years ago, since I'm sure that I'm not the first shooter troubled by poor windage.