Posted: 1/14/2007 2:20:59 PM EDT
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New to 1911's Is a 45 frame the same as a 10mm frame? |
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No and no. It is a VERY common misconception that the frames are the same. The feed lip on a .45 frame is cut deeper to allow the larger diameter round to feed up into the barrel throat. The lip on a 10mm/.40 S&W are a little different, and the .38 Super/9mm are different still. You can weld up the .45 frame and dress it back out or fit a supported ramp barrel to do the conversion. For your application, you are going to probably get a supported ramp (if you can in that caliber) or a 9mm supported ramp and have somebody rechamber it for you. Other alternative is start with a 9mm frame and a 10mm slide and start from scratch. Let me know if there are any other questions, that's what I'm here for. Bob |
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Depends on the round...I don't know how your thing is necked down (look like a .223? Or abrupt, like a 7.62x25?) The frame feed ramp will want to deal with the bullet, while the slide needs to be cut for the brass... The frame will also need an ejector that'll work with the brass. You'll need some kind of hybrid 9mm frame with 10mm/.40 S&W ejector, a slide with a breechface for a 10mm/.40 S&W, and a barrel that has a custom chamber... |
My Kimber 10mm frame is very different from my Colt series 70. The Kimber frame has been milled out a lot to accomodate the 10mm's ramped barrel. |
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My Kimber 10mm frame is very different from my Colt series 70. The Kimber frame has been milled out a lot to accomodate the 10mm's ramped barrel. I'm assuming your Colt is a .45, and yes, the supported ramp barrel requires a little machining to fit it. .315" deep off the top of the frame rails (same width as the barrel feet recess) and .150" deep counterbore (or is it .105", can't remember off the top of my head) on the frame's rail bridge - on a Wilson/Nowlin style cut. Take care, Bob |