I have adapted this slider configuration to almost all of my 22's now. And like Jerry said the idea I believe we got came from the Eric Johnson 22's. The biggest win in my opinion with this style is the install, I use a woodruff cutter, cut the slot down the side, then across the end to appropriate depths, make a slider to fit that slot and finsh machine the face, chamber and rim fit. With care, some prussian blue, and the extractor fits well and gap don't exist. Mr. Bly got me started with using a scrap piece of brass, a ring sweated on the barrel to hold the slider for finish machining, but this process evolved to a pair of small hose clamps. Works quick and simplified the process even more. I've used this slider design on Hepburns, Farrows, rollers, Webley's, Westley Richards, 1885's, Sharps, Ballards and currently with a No 1. The conventional extractors on most of these mentioned doesn't work very well with the little 22. Here's pics including some of the processes and results. When things go right, the extractor disappears at battery. I've used 8620, A2, O1, and 17-4 stainless to make these, hands down the best material but also the most difficult is 17-4, heat treating this is as simple as heating to a specific temp and letting it air cool - it'll outlast me. Does this part need heat treat? probably not but I have a few builds now with original design extractors that I have to re-do because of wear from usage... As BR said, the hole drilled parallel to the chamber for an extractor on the #3 didn't set well with me, that's where it all began in my repertoire. GT
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