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  #1  
Old 07-24-2007, 02:05 PM
Gray_Wolf Gray_Wolf is offline
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Kimber .40 to 10mm conversion?




If I get a Kimber custom 2 Stainless in .40 what exactly do I need to convert it to 10mm? Iím assuming just a 10mm barrel and mags right? I donít have a 1911 yet so Iím 100% sure about thisÖ

Would the 10mm barrel and mags have to be made by Kimber or will other 1911 10mm barrels would simply drop in?


btw do kimbers have a caliber of the model stated on the slide?
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  #2  
Old 07-24-2007, 02:20 PM
freakshow10mm freakshow10mm is offline
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No. Use the stock barrel. Have a gunsmith ream the chamber to 10mm Auto. The 40S&W is identical to the 10mm except is .125" shorter. S&W and Winchester shortened the 10mm case to "invent" 40S&W.

Hunter Customs in Missoui did two barrels for me. One for a Para P16 and most recently my Kimber Pro Carry (was a 40). I recommend him to anyone. He is the man!

You will also need 10mm mags as the Kimber 40 mags have a shoulder in them to move the cartridge forward. Do a search here on 10mm conversion in the Kimber section. I have pics up of the difference between the mags.

I use Metalform mags in my 10mm Kimber conversion. They are the welded base 8rd with pad. They are pricey but worth it.

Kimber stamps the barrel with the caliber, not the slide.
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  #3  
Old 07-24-2007, 02:54 PM
richp richp is offline
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You could just have the barrel rechambered to 10mm for a minimal fee, although new ramped 10mm barrels are easy to get.

You will need new 10mm mags and maybe a stronger
recoil spring between 19 to 21 lbs.

The Kimber does not have a caliber designation on the slide. A converted fixed sight matte stainless would be a fine looking pistol.

If you do get the .40 S&W try shooting it before you convert, .40 loadings are easier to find and cheaper than 10mm. Buy a box of Double Tap high performance ammo to get a feel for the type of recoil you can expect from a 10mm.

I shoot .40 S&W level loads in my Delta Elite for practice and don't feel underpowered when I have a good 180 gr. JHP at 1,100 fps in the mag. for defense.
I have never had any feeding problems with any of the
standard barrel Delta's I have owned. The case is strong
and just the right length for proper feeding.

There is a wealth of information on the boards
regarding the 1911 in .40 S&W and 10mm.

Loaded up or down the 10mm in the 1911 platform
is my favorite.


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  #4  
Old 07-24-2007, 03:02 PM
richp richp is offline
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No. Use the stock barrel. Have a gunsmith ream the chamber to 10mm Auto. The 40S&W is identical to the 10mm except is .125" shorter. S&W and Winchester shortened the 10mm case to "invent" 40S&W.

Freakshow - If asked, I was going to point him to your previous posts on your conversion.

Was your Carry Pro ever sold ? How did the frame hold
up?
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  #5  
Old 07-24-2007, 07:27 PM
Gray_Wolf Gray_Wolf is offline
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thanks...

So if I get the .40 chamber/barrel reamed to 10mm length can I still shoot .40S&W in it?


btw does .40 Kimber have a fully supported chamber? (I reload)...
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  #6  
Old 07-24-2007, 08:34 PM
Joe D Joe D is offline
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No. There is no such thing as a fully supported chamber. Some have more support than others.
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  #7  
Old 07-24-2007, 08:42 PM
Gray_Wolf Gray_Wolf is offline
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well some guns have pretty good chmaber support that I would call fully supported...

So how good is the chamber support on the Kimber custom II .40? better than on a Glock 22?
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  #8  
Old 07-24-2007, 10:29 PM
freakshow10mm freakshow10mm is offline
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Quote:
Originally Posted by richp

Was your Carry Pro ever sold ? How did the frame hold
up?
No. Still have it. Just got back from smith. Got a EB beavertail, wide extended thumb safety and C&S trigger kit smoothed out to 3.3# with no C or OT. Going to get night sights, bobtail conversion, and hard chrome bead blasted matte.

Frame is doing fine. Round count is up to 2000rds with no abnormal wear. This is with handloads in excess of 215PF. Still holds 1" groups at 25y.

The stock Kimber recoil spring is 22# and is PLENTY for full house 10mm. I installed a 24# spring in mine because the brass was flying 40 (yes, forty) feet behind me. The 24# keeps it closer.

The Kimber barrel has excellent 6'oclock casehead support. No need to worry.

Do NOT shoot 40S&W in your 10mm barrel. You will have excessive headspace and will damage your gun. If you reload 10mm you will save. I handload 10mm for about 4.5 cents per round. Buy 10mm brass and adjust your load to your needs. 40S&W levels for practice, full house 10mm for hunting. This is why the 10mm is so great. Versatility.

A good medium load with lead is 6.0gr of WSF and a 175gr lead SWC. A good medium load with jacketed is 9.2gr of Longshot and a 180gr JHP. Both will do about 1150fps or so and will be easy on you and your gun. The lead with WSF load is scary accurate. Try it.
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  #9  
Old 07-25-2007, 07:55 AM
Joe D Joe D is offline
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I have heard that half of the .40 Glocks blow up due to no chamber support. Is that true? I read that on the internet so it must be.
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  #10  
Old 07-25-2007, 10:07 AM
freakshow10mm freakshow10mm is offline
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What do Glocks have to do with a thread on Kimber 1911's? I don't see where this fits in.
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  #11  
Old 07-25-2007, 10:21 AM
richp richp is offline
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A good medium load with lead is 6.0gr of WSF and a 175gr lead SWC. A good medium load with jacketed is 9.2gr of Longshot and a 180gr JHP. Both will do about 1150fps or so and will be easy on you and your gun. The lead with WSF load is scary accurate. Try it.

FS - Thanks for the load data. I am pulling out the old rock
chucker as we speak.
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  #12  
Old 07-25-2007, 04:27 PM
Joe D Joe D is offline
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Read Gray Wolf's post.
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  #13  
Old 07-25-2007, 05:37 PM
Gray_Wolf Gray_Wolf is offline
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Joe I still don't know what that has to do with what I asked?

I reload and would on resuing brass many mines and since relaoding cases over and over again makes 'em weaker I want to have as much chamber support as possible esp in hight pressure rounds like .40 and 10mm...

Last edited by Gray_Wolf; 07-25-2007 at 05:39 PM.
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  #14  
Old 07-25-2007, 06:20 PM
Joe D Joe D is offline
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You wanted to know if a .40 Kimber had better chamber support than a Glock 22. A Glock 22 has more than enough chamber support. Let's see I put over 100,000 rounds through my old G35. Not one single round was factory ammo.
Your question implies that a G22/35 does not have enough chamber support. That is not an accurate assumption.
To answer your question - a Kimber .40 has enough chamber support. Just like a Glock does.
All the chamber support in the world will not protect you from dumb reloading practices.
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  #15  
Old 07-25-2007, 08:19 PM
wally_666 wally_666 is offline
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Quote:
Originally Posted by freakshow10mm
No. Use the stock barrel. Have a gunsmith ream the chamber to 10mm Auto. T

Hunter Customs in Missoui did two barrels for me. One for a Para P16 and most recently my Kimber Pro Carry (was a 40). I recommend him to anyone. He is the man!
Mind if I ask what was the approximate price for the service?

--wally.
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  #16  
Old 07-25-2007, 08:29 PM
freakshow10mm freakshow10mm is offline
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$67 for reaming, checking headspace, polishing chamber, removing "40S&W" stamp from barrel and stamping "10mm" on barrel AND return shipping with insurance. I throw a little extra on top of it because he is a great guy and I think he undercharges a bit for his expertise and services.

Hunter Customs is also a member here on the site. His website is huntercustoms.com.

I wouldn't let anyone else touch my 40S&W to 10mm conversion barrels. He is the first and last stop. Very humble guy. Tell him Adam from the UP sent you there.
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  #17  
Old 07-25-2007, 09:09 PM
Gray_Wolf Gray_Wolf is offline
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Quote:
To answer your question - a Kimber .40 has enough chamber support. Just like a Glock does
a simple yes or no would be sufficient

I've shot a G22 and seen the bulged cases at 6 o'clock with factory ammo also shot other guns that didn't do this; so I don't consider it to have enough support at least as a reloader I want more. But I'm NOT here to discuss Glocks. This is Kimber forum...


Quote:
The Kimber barrel has excellent 6'oclock casehead support. No need to worry.
freakshow10mm, thank you!
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  #18  
Old 07-26-2007, 08:54 AM
Joe D Joe D is offline
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Then why did you compare it to a Glock 22? I will be happy to take all the Glock fired brass you have.
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  #19  
Old 07-26-2007, 11:15 AM
freakshow10mm freakshow10mm is offline
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Here is some eye candy of my Kimber Pro Carry 10mm.

Pics as promised.













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  #20  
Old 07-26-2007, 12:20 PM
freakshow10mm freakshow10mm is offline
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Here is casehead support from a Para Ordnance 10mm (conversion) barrel. The Kimber is identical, I just don't have a pic of it.

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  #21  
Old 07-26-2007, 01:59 PM
Gray_Wolf Gray_Wolf is offline
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that looks pretty sweet!


Joe I mentioned Glock because I wanted to make sure that Kimber has a better chamber support....
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  #22  
Old 07-26-2007, 10:28 PM
richp richp is offline
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Very nice !



I have a Kimber Carry Pro in 9mm. I can just imagine
what touching off a Double Tap loading feels like.
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  #23  
Old 07-27-2007, 10:13 AM
freakshow10mm freakshow10mm is offline
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Go to youtube.com and do a search for "freakshow10mm". Three vids of me and the Kimber 10mm will pop up. Enjoy.
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  #24  
Old 07-28-2007, 05:46 PM
Joe D Joe D is offline
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I guess I am a little sensitive about the Glock unsupported chamber myth. It ranks up there with the firing out of battery, kabooms and lead bullets.
I have a Kimber in 9mm and .40. There is more than enough chamber support.
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  #25  
Old 07-29-2007, 05:30 PM
Gray_Wolf Gray_Wolf is offline
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So to clarify if I wanted to keep the .40 barrel and just get a separate 10mm barrel it would be a simple drop in replacement right? Would any 1911 Kimber 10mm barrel work with in any .40 Kimber?




Joe don't know about calling these them myths; I mean in couple reloading manuals they actually say that their .40 load data is intended for use in guns with a fully supported chambers otherwise the cases may bulge or rupture... Also doesn't it say in the Glock manual not to use lead bullets because of the polygonal rifling? Might just be me but there seem to be more info on .40 Glock KB than other guns (but it is of course possible to blow up ANY gun if you use too much powder)

Last edited by Gray_Wolf; 07-29-2007 at 05:36 PM.
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