41059 seems to shoot very well in my 4" model 57 at around 1000 fps and Unique powder? Graybeard (Bill) just got through running a special price on LBT molds but, alas, I was broke at the time or I would have ordered a heavier LFN mold in both .41 and .44 calibers, probably 250 in .41 and 300 in .44. Story of my life? I think most here don't know what we've got in Bill, thanks Bill, for the offers Hope the forum made out on the deal.