10mm Ammo History and Specifcations

[475/480]

I have Quickload and will run some of the handloads off my 4 barrels/3 guns post in the handload forum.

Sean

[REDLINE]

I have Quickload and will run some of the handloads off my 4 barrels/3 guns post in the handload forum.

Sean

That will be great!  Would definately like to see more of its guestimations and how they play out with the pressure signs you see from shooting.

[sqlbullet]

I priced pressure barrels the other day.  The barrel itself wasn't that bad at about $350.  You would still need an action to put it in, and to instrument it up.  I bet you could build one for about $700.  That would be great to pair up with quickload and observations like case head expansion.  Then we could get out own idea about what factory loads are doing, as well as develop more consistent handloads.

[The_Shadow]

sqlbullet, did you have a particular link for the pressure barrels? 

[sqlbullet]

Krieger test barrels.  Pricing starts at $340.00 and goes up.

[The_Shadow]

Thanks, Using that system would be better than those which use the strain gauge wrapped around the out side of a barrel.  The SAAMI test uses a strain gauge inside in contact with the casing from what I read.  The straing gauge maybe a pistol type?


I did come up with this company that makes the pressure transducers said to be what SAAMI uses.
http://www.pcb.com/TM_Pressure.asp

This site also has some good info and interesting readings
http://firearmshistory.blogspot.com/2011/01/testing-firearms-measuring-chamber.html

[REDLINE]

I priced pressure barrels the other day.  The barrel itself wasn't that bad at about $350.  You would still need an action to put it in, and to instrument it up.  I bet you could build one for about $700.  That would be great to pair up with quickload and observations like case head expansion.  Then we could get out own idea about what factory loads are doing, as well as develop more consistent handloads.

That would be awesome!

[The_Shadow]

I added a copy of a chart of ammo performance levels to the intro sheet.  As we review these some of the numbers have been safely exceeded on the upper end!   

[The_Shadow]

This may also be of intrest for those seeking info about pressure testing equipment...
http://www.ketmer.com/hsp/testing/index.htm

They also make quality barrels to very exacting tollerances.

[REDLINE]

H-S Precision manufactures top notch test recievers/barrels/fixtures too.

https://www.hsprecision.com/shop2/ballistics.html

[RRMan03]

My real Winchester Subsonic 180gr JHP FBI load says 950-980 on the box. It is really FBI Lite. This was the LE only ammo. No retail sales.

[The_Shadow]

For those who don't know...Bren-Ten.com http://nordicg3k.tripod.com/website/
This website has a great culmination of information relative to many things with respect to 10mm firearms and history.

[Rome]

I love this info!

[The_Shadow]

The Ammo that started it all...Norma 10mm Auto as loaded for Dornaus & Dixon's then "NEW" Bren Ten

Norma actually produced three factory loads for the 10mm...MADE BY FFV NORMA AB – S-670 40 AMOTFORS - SWEDEN
200gr JTC @ 1200fps    Norma Ref #11001   (later reduction to 1180 fps and 1050 fps
170gr JHP @ 1300fps    Norma Ref #11002   (early lots (83-84) were loaded to 1400fps/740fpe)
165gr JHP @ 1400fps    Norma Ref #11003 ? (165's were rarer)





A page from Norma Hand-Loading data manual (don't bother looking for the R-123 powder it has long been discontinued!


Data for the NORMA 170gr (cartridge provided by Intercooler)
Cartridge is from Ammo Manufacture: Norma 170 grain JHP
Ballistics Information: 10mm Auto
Muzzle Velocity: 1270 fps
Muzzle Energy: 608 ft. lbs
Brass Make/Headstamp: Norma – Brass (weight 77.8 gr.)
Bullet Make/Weight/Construction/Info; Length 0.6265"/Dia. 0.4000": 170gr Norma JHP
Actual weigh 170.0 grains  Crimp Diameter 0.3995"
HP depth  HP 0.1550" / HP dia. tapered / mouth 0.2410"
C.O.A.L.: 1.2500"
Primer: Nickel color (NP)
Case: Diameter 0.4225" Crimp Diameter 0.4220" (tight) Length 0.9880"
Powder Description/Positive ID/Type/Charge Weight: ? NORMA R-123 ?  12.8 grains
Tested Velocity: 1270 fps

[Intercooler]

No charge weight for the 170's to match it up. Do you know if anything exists?