Like many others on the forum I have wanted a 414 Supermag for a long time. Made a few attempts at getting one and either went beyond my funds at the time or I was 2nd in line. Decided for the time being I would at least be able to see if I liked it without dropping big $ by converting a surplus 740 to 414. 
Started by convincing Dan Wesson in Norwich (not easy btw) to sell me a cylinder. In the process they informed me that they had no more large frame extractors for 357 or 41. I placed a want ad on here and a couple other places along with looking at the normal parts places and ebay with no success. Decided that the only direction I could take would be to make one. Took a 44 that I did have back engineered it to the best of my ability confirmed everything on a CNC CMM and modified the cutouts for 41. Since my day job is to program CNC lathes, mills and a Multus along with some solid modeling when engineering is backed up I drew up a model and made a print. Then programmed the front side (the part the hand actually rotates) and managed to slip it through the shop leaving the back star shaped slots to do manually. I did that since I was trying to be quick and not tie up a machine for a long time (not planning on making a bunch). Sent them out to heat treat, made a fixture for a manual mill, machined the back shape, made the hex rod the extractor actually is assembled on and fit it all together. The barrel was a 10” DW 41 barrel I got from rwsem that was cut down and rethreaded for the frame end 11/16-32 and the nut end 21/32-40. Cut the forcing and threw my normal crown on it. Then polished everything up which took a while DW was not great with their as machined finish. Took it out for it’s test fire yesterday and seemed to shoot good everything worked as it should. I think it made me want a real one even more now……… 

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