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  #1  
Old 03-07-2010, 07:49 PM
dream45 dream45 is offline
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Join Date: Jun 2001
Location: Portland, Or.
Posts: 102
9mm/.38 super-10mm/.40 or both

I have been interested in have my next 1911 set up so I could switch between a range caliber and a field caliber. I lay awake at night thinking about the possibilities and wish the 1911 was engineered similar to the EAA Witness so all you needed to do was order the barrel/spring/mag for the desired caliber. I have done exactly that and have enjoyed the witness but want to focus on 1911's.

Someone mentioned that starting with a 10mm you could convert to a .40 and 9mm/.38 super. This does not seem correct so I wanted to ask the forum. Is it possible with the correct parts and fitting by a gun smith?
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  #2  
Old 03-07-2010, 08:44 PM
juleslewis juleslewis is offline
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Join Date: Nov 2003
Posts: 86
"Easy" conversions are 9mm - .38 Super and 10mm-.40S&W-.357Sig, respectively. Kimber used to (don't know if they still do) use the same breech face diameter for both 9mm/38 Super and 10mm/40SW slides. So I was able to start with a 38 Super Kimber and fit barrels for 9mm, 10mm, 40S&W, 357 Sig, and 9x23 Win. Right now it's set up for 40S&W.
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  #3  
Old 03-08-2010, 06:49 PM
TonyT TonyT is offline
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Join Date: May 2004
Location: Michigan
Posts: 580
I have an older pre-CZ blued Dan Wesson Pointman which was built with two slide/barrel combos for 9mm and 40 S&W. In the DW Pointman the breechface on the 40 and 9mm slides are different.
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  #4  
Old 03-08-2010, 06:51 PM
TonyT TonyT is offline
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Join Date: May 2004
Location: Michigan
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I have an older pre-CZ blued Dan Wesson Pointman which was built with two slide/barrel combos for 9mm and 40 S&W. In the DW Pointman the breechface on the 40 and 9mm slides are different.
I wanted to have an extra slide/barrel added to my 40 STI Trojan but the cost was such that it was virtually identical to purchasing a new gun.
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  #5  
Old 03-09-2010, 05:07 AM
richpetrone richpetrone is offline
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Join Date: Nov 2006
Location: Central Florida
Posts: 6,322
Multi caliber guns

I opened up the breechface ona .38 super slide to accomodate a .40 S&W barrel. I then set the gun up for 9mm, .38 super, and .40 with multiple barrels fitted and magazines. The gun works flawlessly, but I also used ramped barrels since I ordered the frame with a Wilson/Nowlin ramp cut. I am not sure if the feed ramp angles are different on regular fitted barrels in the above calibers, but the advantage of the ramped barrel is the feed ramp angle is alreaddy designed into the barrel.
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  #6  
Old 03-09-2010, 07:31 AM
CherryRiver CherryRiver is offline
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Join Date: Sep 2004
Location: Southwest Chicagoland
Posts: 84
I picked up an old '47 Super .38 that came with a 9mm barrel and a bunch of old magazines for reasonable money a few years ago.
I went out and bought Starline brass just to use the .38 barrel but basically just used it as a range gun with the 9 barrel. Heaven knows what brand the barrel is or who fitted it, but the thing runs perfectly in both calibers so I don't give it a lot of thought.
The changeover is doable on the range table in a minute or so, just having to change the barrel and recoil spring. Apparently the guy who put this together got the extractor right for both.
Being an old Super with the rim headspacing, the Super configuration isn't very accurate, but the 9 version sure is.
I slapped on some more-visible sights and just run the thing hard.
I see where Bar-Sto has 9x23 barrels in stock and I'm tempted, even though it would mean finding some ex-pen-sive brass to run it with. Could be loud fun, though, which is what the .38 Super is nowadays anyway.
Still, the ol' clunker's reliable enough for a personal protection gun if I wanted.
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