Cyclone Posted November 25, 2009 Report Share Posted November 25, 2009 I decided to try this after the comment was made about a clamp on unit. Before I remove the barrel to thread it I wanted to try something different. So I made this unit that slips on the end of the barrel and a set screw on the underside holds it in place. I positioned the set screw in a fashion that will be somewhat unnoticed and if I do decide to thread the barrel the scratch from the screw will be turned off anyway. I do need to make a second unit and tighten it up on the barrel around .004 I want it to be somewhat snug. I will be shooting it this weekend and will report back on how it went. Quote Link to comment Share on other sites More sharing options...
imschur Posted November 25, 2009 Report Share Posted November 25, 2009 I like it, really nice job. My thinking is one step farther but a lot more complicated. Have the insides contain either a split conical washer or a ferrule. Think of a cordgrip or compression type copper fitting. By tightening the two parts together it clamps the barrel 360 degreesAlternatively make it a shrink fit where you heat the flash hider to get it on the barrel similar to a press fit with a bearing.Anyhow this is fun to watch, I look forward to your progress. Quote Link to comment Share on other sites More sharing options...
imschur Posted November 25, 2009 Report Share Posted November 25, 2009 BTW, when your satisfied lets throw this up on the main site :thumb: Quote Link to comment Share on other sites More sharing options...
Cyclone Posted November 25, 2009 Author Report Share Posted November 25, 2009 The ferrule would require having one of the correct .668 diameter. I like the heat to swell it up and when it cools it would be there for sure. Kind of like putting c-clip eliminators in a 12 bolt Chevy rear end. It would make it more difficult to remove or swap out. I am thinking that if the fit is a snug slip the set screw should be OK afterall it is just a 22. I think it should function somewhat though. It would look better black but for R&D purposes its good enough. I went with a .290 center bore thinking that I would like lots of clearance for a 22 round coming through. What kind of clearance do they generally have in the bore ? Quote Link to comment Share on other sites More sharing options...
imschur Posted November 25, 2009 Report Share Posted November 25, 2009 There are AR-15 flash hiders that attach with a set screw. I think your fine as is. I think Brownells has something to blacken aluminum, Aluma Black or something.As for the bore Im not sure. I know when I looked at a flash hider for a .308 a while back the initial bore was only a few thousandth's larger than the barrel bore then it opened up quite a bit. I think your numbers are good. jmhoIf i can remember I will bring home some tools and measure a few of mine. Quote Link to comment Share on other sites More sharing options...
Cyclone Posted November 25, 2009 Author Report Share Posted November 25, 2009 Once I get it refined and tested. I may see if I can get a few made by a CNC shop that makes parts for us at work. One at a time is a bit time consuming. I will check out some of the others out there may see some ideas. Quote Link to comment Share on other sites More sharing options...
imschur Posted November 25, 2009 Report Share Posted November 25, 2009 I gathered some info here a while back Quote Link to comment Share on other sites More sharing options...
Cyclone Posted November 29, 2009 Author Report Share Posted November 29, 2009 Well after a couple hundred rounds it certainly did not adversely effect the accuracy.I did spend a little time dialing in my new 4X scope but now that that is done she is hitting beer caps from 150ft. Using my new bi-pod of course. I need to make another and tighten it up on the barrel, I went a bit too far when boring it and had to use a thin .002 piece of shim stock to secure it. Once the new one is done I am going to go shoot and track the accuracy and take notes on noise and stability with and without it on. I really don't see an issue it looks cool and didn't screw with the accuracy. I do however want one with no shims to make me feel better about it. Quote Link to comment Share on other sites More sharing options...
asmurff Posted November 30, 2009 Report Share Posted November 30, 2009 You may have something there if you can produce and sell them for a profit. You might want to start the patent. Quote Link to comment Share on other sites More sharing options...
Cyclone Posted December 1, 2009 Author Report Share Posted December 1, 2009 aww then I would have to find some way to spend all the money :beer: Quote Link to comment Share on other sites More sharing options...
asmurff Posted December 1, 2009 Report Share Posted December 1, 2009 :dance: Quote Link to comment Share on other sites More sharing options...
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