Cartridge is from Ammo Manufacture: CORBON 135gr  Pow'R Ball
Ballistics Information: 10mm Auto
Muzzle Velocity: 1400 fps
Muzzle Energy: 588 ft. lbs
Brass Make/Headstamp: Star Line - Brass
Bullet Make/Weight/Construction/Info; Length 0.5990"/Dia. 0.4025': 135gr. Pow'R Ball
Actual weight 135.6 grains   Crimp squeezed bullet to 0.4000"
C.O.A.L.: 1.2660"
Primer: Nickel color
Case: Diameter 0.4215" Crimp Diameter 0.4220" (Tight) Length 0.9845"
Powder Description/Positive ID/Type/Charge Power Pistol Weight: 10.2 grains
Tested from S&W1006 5" 1450 fps June 8, 2013
Case expanded to 0.4270", primer slightly flattened, case look good.

Cool. Does that match their 135 HP?

My labels are a little better than the blue tape 


So the 135 JHP was 10.4 and this 10.2. Redline will go  but does that make much difference?

Cartridge is from Ammo Manufacture: CORBON 200gr  RNPN Hunters
Ballistics Information: 10mm Auto
Muzzle Velocity: 1125 fps
Muzzle Energy: 562 ft. lbs
Brass Make/Headstamp: Star Line - Brass
Bullet Make/Weight/Construction/Info; Length 0.6685"/Dia. 0.4000": 200gr. FMJ Linotype core penetrator
Actual weight 199.6 grains   Crimp squeezed bullet to 0.3980"
C.O.A.L.: 1.2585"
Primer: Nickel color
Case: Diameter 0.4210" Crimp Diameter 0.4200"  Length 0.9885"
Powder Description/Positive ID/Type/Charge Power Pistol Weight: 7.4 grains
Tested from S&W1006 5" 1179 fps / 1166 fps June 8, 2013
Cases expanded to 0.4275" / 0.4275", primers slightly flattened some wipe, cases look good some stress.

I have yet to Chrony these but it makes sense the Cor-Bon moves out slower with the 7.4 versus the GAS Ammo 200 with 7.8 of the same powder. Davids numbers in the chart will be a little lower than mine but it gives us something to go by.

Alliant data for 200 grain I have shows 7.7 grains of PP @ 1145 fps

I got 1143 FPS out of that GAS Ammo at 7.8

That's where the velocity should be for that GAS based on Alliant's data. 

There was probably more room for more powder with the Pow'RBall, but if you look at the diameter it is 0.4025" on the bullet's base...not sure that that would raise the pressure that much, Alliant actually shows a 135 grain with 10.6 of PP @ 1,530 fps 35,600 psi.  However the 10.2 grain may have been shy by 0.2 of a grain to equal 10.4 of the other loadings.

LOL  

No  this time.  A 135gr copper jacketed lead 10mm load at 1400fps with PowerPistol isn't pushing any boundaries to begin with.  Therefore a range of 10.2-10.4 grains of PowerPistol isn't gonna make any difference from a safety aspect.

Even with DRSJR1969 hitting a high of 1455fps, no big deal in that bullet weight with that type of bullet.

What I find interesting is that DRSJR averaged 1442 out of the Powerball and only 1375 out of the standard Corbon 135 grain JHP.

The Pow'R Ball bullet measured Length 0.5990"/Dia. 0.4025": 135gr. Pow'R Ball
The Nosler 135 JHP measured Length 0.4935"/Dia. 0.4010": 135gr. JHP

The bullet length and dia. differences could account for some differences...

Redline would have a field-day with all these factory variances 

Quote from: The_Shadow on March 10 2013 11:08:33 AM MDT
The Pow'R Ball bullet measured Length 0.5990"/Dia. 0.4025": 135gr. Pow'R Ball
The Nosler 135 JHP measured Length 0.4935"/Dia. 0.4010": 135gr. JHP

The bullet length and dia. differences could account for some differences...

That's good to know, thanks.

Quote from: 4949shooter on March 10 2013 05:10:48 AM MDTWhat I find interesting is that DRSJR averaged 1442 out of the Powerball and only 1375 out of the standard Corbon 135 grain JHP.

I was scratching my head about that too.

Quote from: The_Shadow on March 10 2013 11:08:33 AM MDT
The Pow'R Ball bullet measured Length 0.5990"/Dia. 0.4025": 135gr. Pow'R Ball
The Nosler 135 JHP measured Length 0.4935"/Dia. 0.4010": 135gr. JHP

The bullet length and dia. differences could account for some differences...

I'm wondering how the actual bearing surface lengths of the two 135gr bullets compare.  Going by the overall lengths of the bullets it loosely seems like the 135gr Nosler should be able to be pushed faster with equal or less pressure behind it.  But knowing the actual bearing length may tell a different story.  Is it still possible to get measurements on the actual bearing length of both 135gr bullets?