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Old July 20, 1999, 07:53 AM   #1
HS
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Join Date: October 11, 1998
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Anyone know what were the specifications for their 10mm rnd ?
Weight & type of projectile.
Advertised/factual velocities.
TIA

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Old July 20, 1999, 10:46 AM   #2
fal308
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www.norma.cc is their website but I didn't see 10mm under pistol cartridges. You could try to e-mail them, unless your reputation for warm loads has preceeded you to Sweden also . They also have a ballistic computer in English and one in metric.
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Old July 21, 1999, 05:14 AM   #3
HS
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Thanks fal,
I tried to get in but....
Access DENIED, we know WHO you ARE
appeared on my monitor.
I found the "10mm Site" on another thread, so I've now obtained LOTS of data to twist & improve my thoughts on how a 10mm should accelerate !
Gunner give it a shot soon.


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Old July 21, 1999, 10:43 AM   #4
fal308
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At least now you can say that you're known world-wide. Or that your reputation does preceed you. ROTFLMAO
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Old July 22, 1999, 09:02 AM   #5
HS
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Hell, I thought it was my bullets that preceeded me !
Lots of folks World Wide wonderin' W.T.H is a semi-melted .40 cal projectile doin' on their lawn !

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Old July 23, 1999, 09:39 PM   #6
WESHOOT2
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Norma stated a velocity of 1200fps for the 200gJFP. The ammo actually delivered advertised velocity. "Warmish" is how gun mags described it. Then Norma slowed it down; apparently in deference to old tired wrists.

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Old July 26, 1999, 03:02 PM   #7
Tomas
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Norma actually produced three loads for the 10mm.

200gr FMJ @ 1200fps I guess is the most well known. This load averages about 1130 fps from my Glock 20.

170gr JHP @ 1300fps. I've never seen this one, only heard about it. I'l love to get some and test it out though.

165gr JHP @ 1400fps. Looks great on paper but a dismal performer. I have a few boxes of this and the standard deviations are high, though not outrageously so. Velocity averages 1333fps from my Glock 20. This round is LOUD with the most flash and blast I've ever seen from my G20. Kinda fun to shoot though. Primers flatten, but the cases have held up good - no smiles near the case head at 6:00.

Tom

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Why 10mm beats .45 ACP . . .
www.greent.com/40Page/ammo/10/10mm-advoc.htm
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Old August 10, 2010, 01:57 AM   #8
gelande
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A sincere "Thank You!" to you Gentlemen.

Sirs:

Despite being a very shot-up, shot-down, blown-up, and worse USMC Colonel / Physicist / Patron NRA member / 60+ years of handloading, careful research, etc., thanks to you Gentlemen, anyone, however supposedly well educated in this field, always has so much more to learn, and you people provide that.

With all sincerity, a big "Thank's" to you all.

Colonel
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Old August 10, 2010, 11:30 AM   #9
WIL TERRY
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I'VE been a LONG time 10MM NORMA shooter [ yep, owner every such gun imaginable except Tanfoglio, including having had built a custom 10MM Single Action sixgun...it never misses... ] and had cases upon cases of that ammo along with everything manufactured in the USA also [ still gotta lot left over...]
The Norma ammo made specs pretty handily. The 200GR FMJ was right on the money and would put 10MM holes damn near in anything in need of one.
The Norma 170GR load was pretty much on spec also but that JHP bullet would not expand on any thing softer than a Tiger Tank !!! The Norma 10MM brass was the pick-of-the-litter until the FEderal and Starline came on the market.
I still believe the 10MM NORMA is the best pistol cartridge design since the 41MAG in 1964. It is a steller autoloading pistol cartridge and shoots beautifully and very powerfully from good revolvers. TOO DAMNED BAD it was wussyfied by most of the ammo makers for the most stupid of reasons.
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Old August 11, 2010, 12:52 PM   #10
RickB
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I was reading in Layne Simpson's book on custom 1911s, that the original Norma spec was 44,000CUP chamber pressure, and that later they (and major U.S. companies) loaded to about 36,000. That would explain why very little ammo gets anywhere near the velocities of that mid-'80s Norma stuff. While it may have been wussyfied, the modern 10mm is just what Col. Cooper envisioned when he inspired Dornaus & Dixon to design the 10mm cartridge; a .40", 200gr bullet with an impact velocity of 1000fps. The 10mm was supposed to replace the .45 ACP as a service cartridge, not challenge the .357 or .41 Mags as a hunting round. In that sense, the 10mm was the same sort of "failure" as the .41 Mag.
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