10 mm 1911???

[brian923]

i am wanting to purchase the taurus PT 1911, in 45 acp. would it be possible to make another slide in 10 mm auto that would allow me to change between the to calibers?? i guess i am wondering if there are any 10 mm barrels availibal for the 1911, as well as magazines?? could i use a regular 45 acp slide? or do i have to get a slide specific to 10 mm auto?

thanks alot guys, brian

 

[1911austin]

You would need a slide with a .40/10mm breach face, a 10mm barrel as well as 10mm mags

 

[Zundfolge]

Like 1911austin said, you need the .40S&W slide NOT the .45acp one (.40S&W is basically 10mm shortened).

Converting a .40 1911 to 10mm is a pretty easy proposition. Ream out the chamber, replace the recoil spring with a heavier one and swap out the mags and you're good to go.


There's actually a "project and conversions forum" over at 10mmtalk.com. Lots of good info there.


I'm wondering how well the PT1911C (commander sized) would convert to 10mm ... then get an Ed Brown bobtail mainspring housing and you've got a 10mm Commander Bobtail for a bit less than the Dan Wesson would cost

 

[BlindJustice]

Doesn't the Colt Delta 10MM have a longer
magazine & mag. well and that is why the grip
is longer?

Why do the 10MM when .400 CorBon barrels
can be a "Drop-In' & perhaps a stronger recoil
spring.

 

[Guncrazy45]

Converting a .40 1911 to 10mm is a pretty easy proposition. Ream out the chamber, replace the recoil spring with a heavier one and swap out the mags and you're good to go.

Actually, because the 10mm case is longer than the .40S&W, you may need to lengthen the ejection port on the slide, as well. Also, 10mm mags may not fit in the pistol due to the longer cartridge length.

 

[Zundfolge]

Actually, because the 10mm case is longer than the .40S&W, you may need to lengthen the ejection port on the slide, as well. Also, 10mm mags may not fit in the pistol due to the longer cartridge length.

1911s are designed for .45acp, not .40S&W, so mags are basically .45acp mags with the feed lips adjusted to 10mm and the ejection port is big enough for the .45, its big enough for the 10mm.

Plenty of folk are converting .40S&W 1911s to 10mm all over the place, and I've never heard one of them say they had to lengthen the ejection port.

Doesn't the Colt Delta 10MM have a longer
magazine & mag. well and that is why the grip
is longer?

I don't believe the Colt Delta Elite grip is any different from their .45acp 1911. The grip on the Delta Elites sometimes looks longer because they are wearing those wrap around Pachmayr like grips.

 

[darkknight]

If a .45acp 1911 cant be used why can a glock 21 be converted to 10mm with only a barrel and mag change. I know its a diffrent topic but im wondering whats the difference?

http://www.rb-treasures.com/FD/PB.htm is an example of the barrel

 

[SouthpawShootr]

If a .45acp 1911 cant be used why can a glock 21 be converted to 10mm with only a barrel and mag change. I know its a diffrent topic but im wondering whats the difference?

Converting a Glock 21 to a 10mm will require a special 10mm conversion barrel. Otherwise it won't work. You can't put a G20 barrel in a G21 slide, change the mags and go to the range. I've not seen .45 to 10mm 1911 conversion barrels offered. Maybe incompatabilities with the design?

 

[R&J]

"I've not seen .45 to 10mm conversion barrels offered. Maybe incompatabilities with the design?..."

*****

I've got a KKM .45 ACP : 10 mm Conversion Barrel for my 3rd Gen G21. I added a SS guide rod, 22 lb.spring, and G20 10 mm magazines. That's it!

The rig is about 90% reliable, with occasional fail-to-feed issues, I'm told can be tweaked to 100% I'll try a 20 lb. spring... It's a project gun.

This is okay for range work, and the occasional FTF makes the Kimber guys happy!

I'd recommend a dedicated 10 mm for hunting or CCW.

FYI: The gun is 100% reliable in its OEM .45 ACP mode.

YTD round count is just over 9200--the last 1200 being 10 mm ammos of various sorts. The best functioning ammos for this rig seem to be:

. CCI Blazer
. Winchester Silver Tip
. Double Tap 135 gr Nosler (shown)

These last ones fly at 1600 fps, yielding 767 ft./lbs. That's right smack in .357 nagnum country!

KKM also makes a 10 mm Conversion Barrel for the G30.

--Ray

 

[ernunnos]

If you want a 10mm 1911, just buy a Dan Wesson Razorback.

 

[Iggy]

Case rim diameter of .40 and .45 are different. Ejector location may be a problem.

 

[jfh]

1911 10mms: They cannot easily be built up on .45ACP setups--the main problem is the ejector. The 'heights' of a .45 ACP ejector and 10mm obviously aren't the same--so a .45 ACP ejector is too short; it might function (there is a gunsmith who used to try this), but it is not recommended.

Further, there is the issue of type of feed ramps (on frame, or integrated with the barrel). Generally, good 10mm setups have a feed ramp integrated with the barrel, so the frame is incompatible with a standard .45ACP top end.

Zundfolge's post covers the issues pretty well.

The length of 10mm and .45ACP rounds is nominally the same, so it really is just an issue of tweaking ramps and feed lips. It used to be that .40S&W mags had a shim at the back--I haven't looked at any recently. Other than raceguns, I've never understood why one would own a .40 Short & Weak in 1911 frame, save for the sheer love of 1911s. (OTOH, if SA gets that Micro frame running in .40, that might be a real neat one.)

OTOH, the EAA Witness (and some others) can just be a top end switchout--pull the .45ACP off, put on the 10mm. I have one of these, and it functions perfectly. This package is a cheaper way into 10mm: If one can find one of the Elite Match .40s (rare) and convert it, or the 10mm Elite Match (even rarer; get on the waiting list), This can make a nice convertible.

Despite the forum discussions about Kimber QC, the 10mm Stainless Target II I bought this summer is simply wonderful. I put it through a typical break-in with FMJs, and from round 50 forward, these were reloads--180s running about 1000 fps (just above a target load). One night we did some club competition at 50 yards, when I was at about round 350 or so on the break-in. Although I had never shot handguns at 50 yards before, I could hit a 12" gong in measured / sustained rapid fire. and reliably hit bowling pin 'heads.' That's not a testament to my skills, that's a testament to the ST II's accuracy. It routinely does 1.25" 8-shot groups at 25 yards, and not infrequently without a flyer. It did need the 500-round break-in, however.

IMO, 1911s and 10mms (and that EAA Witness Elite Match) are matches made in heaven.

Jim H.

 

[brian923]

with the EAA witness MATCH, can the slides be removed and changed out like a 1911? i really like the witness match, and have pondered picking one up. i jut cant decide between the PT 1911, the 24/7 OSS (when it finally comes out) and the EAA witness match. i think that i am falling toward the EAA. well see though, i cant afford eaither right now.

 

[Zundfolge]

BTW, if you REALLY want to convert a 1911 to 10mm, you should look at a ParaOrdnance P16-40 ... lots of folk converting them with stellar results.

Think about it; a double stack 1911 loaded up 16+1 with hot Doubletap 10mm JHPs


Used 16-40s can be picked up reasonably. Here's an example.

 

[SouthpawShootr]

BTW, if you REALLY want to convert a 1911 to 10mm, you should look at a ParaOrdnance P16-40 ... lots of folk converting them with stellar results.

Hunter Custom has done this alot and discusses it often on www.1911forum.com. It's not a difficult conversion or expensive either (relatively speaking). The local shop has a P16 in the case that's been there basically forever. I'm thinking of starting a new project....................

 

[Zundfolge]

Another crazy idea is to find a Para Ordnance P14-40 (commander sized doublestack 1911 in .40) and convert it to 10mm ... would make an awesome CCW piece (apparently the tiny P10-40 won't work in 10mm as the shorter slide makes correct timing impossible to achieve...same problem with Kimber UltraCarry and Springfield UltraCompacts in .40)

 

[jfh]

EAA Witness top end changeouts: Yes, just slide one off and the other one on--even simpler than the (traditional) 1911 because the lockup is a linkless design.

The only negative I found with the standard 10mm top end changeout is that the package only has typical combat accuracy--e.g., a somewhat loose slide fit, and I haven't gotten below 2" groups at 15+ yards.

The total package will cost about $300.00, which includes another two magazines, for a total of three. AFAIK, the factory 10mm mags are the only ones available.

Jim H.