Carne Frio Posted February 8, 2012 Share Posted February 8, 2012 Has anybody gotten ahold of one of these ? Looks like they could be converted into 10mm. The Taurus 405B is a 40 S&W, 5 shot that uses moon clips. The Charter Arms 74020 is a 40 S&W that head spaces in the cylinder and uses a unique way to extract cases; similar to the S&W 547 (9mm). Both are five shooters and seem to have cylinders that are long enough. One question would be; can they handle the pressure increase from 40 S&W to 10mm. Quote Link to comment Share on other sites More sharing options...
sqlbullet Posted February 8, 2012 Share Posted February 8, 2012 It is only 2500 psi difference (35,000 for 40S&W, 37,500 for 10mm). In general proof cartridges are far, far, far more overpressure. From a functional perspective they can be considered equal in my mind. Quote Link to comment Share on other sites More sharing options...
jthoresen Posted January 11, 2013 Share Posted January 11, 2013 It is only 2500 psi difference (35,000 for 40S&W, 37,500 for 10mm). In general proof cartridges are far, far, far more overpressure. From a functional perspective they can be considered equal in my mind. I just talked with a gunsmith about this today (reaming a 40 S&W revolver to accept 10mm). He said he wouldn’t do it on a Taurus or Charter Arms. He would do it on a S&W. Still looking for a gunsmith as I'm convinced it would be a safe mod. Jesse Quote Link to comment Share on other sites More sharing options...
sqlbullet Posted January 11, 2013 Share Posted January 11, 2013 I doubt it has to do with specific concerns about this conversion, and general concerns about Taurus and Charter Arms. Lots of gunsmiths I have talked to will not do any work on the guns other than repair as they feel the platform does not merit investment. Same often goes for 1911 work. Usually good gunsmiths require you to send them a Colt or Springfield base gun, and won't work with anything else. Reason are several. Frames not matching specification, which results in cost increases as the frame must be modified before the custom work can begin, concern over the longevity of the frame, and most often concern over market perceptions of the gunsmiths work if it is applied to a low quality base gun. Just buy a reamer and do it yourself. Brownells sells them for about $80 bucks. Quote Link to comment Share on other sites More sharing options...
desperado8605 Posted January 11, 2013 Share Posted January 11, 2013 call me nutty but since you aren't touching the barrel couldn't you just do it off a drill press with a reamer? Quote Link to comment Share on other sites More sharing options...
hariph creek Posted May 30, 2013 Share Posted May 30, 2013 Sorry to revive an oldish thread. Has anybody gotten any further with this? Quote Link to comment Share on other sites More sharing options...
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