Littlestone 155 Barnes, 155 XTP, 165 GD, 180 Sierra, 180 GD Pull-Down

[The_Shadow]

Cartridge is from Ammo Manufacture: Littlestones 155 grain Barnes TAC-XP (copper)
Ballistics Information: 10mm Auto
Muzzle Velocity: 1200 fps
Muzzle Energy: 495 ft. lbs
Brass Make/Headstamp: Star Line – Nickel
Bullet Make/Weight/Construction/Info; Length 0.7335"/Dia. 0.3995": 155 grain Barnes TAC-XP
Actual weigh 155.0 grains  Crimp Diameter 0.3995"
HP depth  HP 0.3645" / HP dia. 0.2270" / mouth 0.2485"
C.O.A.L.: 1.2465"
Primer: Nickel color
Case: Diameter 0.4215" Crimp Diameter 0.4235" () Length 0.9880"
Powder Description/Positive ID/Type/Charge Weight: RamShot Silhouette 7.4 grains
(powder had some yellow dust)(matches Barnes printed data)
Tested Velocity: 155gr Barnes 1151, 1157, 1143, 1145. Average = 1149 FPS/ 454 LBS

[Intercooler]

That's a new one we haven't seen. Is this an expensive or hard to get powder?

[The_Shadow]

RamShot powers (Western Powder Co., handles RamShot and the Accurate Arms products) are available and are reasonably priced.  They have a fairly good selection and it maybe what is being used in the Ted Nugent ammo.

The powders they show for 10mm are; Silhouette, True Blue



***The data for the Barnes appears to be incorrect as the seating depths are that of 40S&W***

[The_Shadow]

Cartridge is from Ammo Manufacture: Littlestones 155 grain Hornady XTP
Ballistics Information: 10mm Auto
Muzzle Velocity: 1450 fps
Muzzle Energy: 723 ft. lbs
Brass Make/Headstamp: Star Line – Brass
Bullet Make/Weight/Construction/Info; Length 0.5515"/Dia. 0.4000": 155 grain Hornady TAC-XP
Actual weigh 155.6 grains  Crimp Diameter 0.4000"
HP depth  HP 0.1350" / HP dia. 0.1185" / mouth 0.1950"
C.O.A.L.: 1.2580"
Primer: Nickel color
Case: Diameter 0.4215" Crimp Diameter 0.4230" (medium) Length 0.9880"
Powder Description/Positive ID/Type/Charge Weight: Alliant Blue Dot 13.0 grains
(powder had some yellow dust)(? is it residue or additive?)
Tested Velocity: 1440, 1466, 1424, 1462. Average = 1448 FPS/ 722 LBS.

[Intercooler]

   I can clearly see the yellow powder. Does most canister Blue Dot not have that? Is their a special one with flash suppressant?

[The_Shadow]

First I ever saw that in Blue Dot powder hence the notations. It could be an additive?

[The_Shadow]

Cartridge is from Ammo Manufacture: Littlestones 165 grain Speer Gold Dot
Ballistics Information: 10mm Auto
Muzzle Velocity: 1350 fps
Muzzle Energy: 667 ft. lbs
Brass Make/Headstamp: Star Line – Brass
Bullet Make/Weight/Construction/Info; Length 0.5770"/Dia. 0.4000": 165 grain Speer Gold Dot
Actual weigh 165.8 grains  Crimp Diameter 0.3955"
HP depth  HP 0.1290" / HP dia. tapered / mouth 0.2505"
C.O.A.L.: 1.2550"
Primer: Nickel color
Case: Diameter 0.4215" Crimp Diameter 0.4235" (medium) Length 0.9880"
Powder Description/Positive ID/Type/Charge Weight: Accurate Arms #9 15.5 grains
(the digital scale only showed 15.4)(powder had some yellow dust)(? Is it residue or additive?)
Tested Velocity: 1360, 1364, 1373, 1358. Average = 1363.75 FPS/ 682 LBS.

[Intercooler]

Same yellow in that one. It must be for flash!

[The_Shadow]

Cartridge is from Ammo Manufacture: Littlestones 180 grain Sierra JHP
Ballistics Information: 10mm Auto
Muzzle Velocity: 1210 fps
Muzzle Energy: 585 ft. lbs
Brass Make/Headstamp: Star Line – Brass
Bullet Make/Weight/Construction/Info; Length 0.6330"/Dia. 0.4000": 180 grain Sierra JHP
Actual weigh 180.0 grains  Crimp Diameter 0.4000"
HP depth  HP 0.2150" / HP dia. 0.1590" / mouth 0.2380"
C.O.A.L.: 1.2475"
Primer: Nickel color
Case: Diameter 0.4215" Crimp Diameter 0.4235" (medium) Length 0.9880"
Powder Description/Positive ID/Type/Charge Weight: RamShot Silhouette 8.4 grains
(powder had some yellow dust)(? Is it residue or additive?)
Tested Velocity: 1218, 1218, 1221, 1214. Average = 1217.75 FPS/ 593 LBS

[The_Shadow]

Cartridge is from Ammo Manufacture: Littlestones 180 grain Speer Gold Dot
Ballistics Information: 10mm Auto
Muzzle Velocity: 1295 fps
Muzzle Energy: 670 ft. lbs
Brass Make/Headstamp: Star Line – Brass
Bullet Make/Weight/Construction/Info; Length 0.6400"/Dia. 0.4005": 180 grain Speer Gold Dot
Actual weigh 181.0 grains  Crimp Diameter 0.3950"
HP depth  HP 0.2210" / HP dia. tapered / mouth 0.2205"
C.O.A.L.: 1.2455"
Primer: Nickel color
Case: Diameter 0.4215" Crimp Diameter 0.4235" (medium) Length 0.9860"
Powder Description/Positive ID/Type/Charge Weight: Alliant Blue Dot 11.0 grains
(powder had plenty yellow dust)(? Is it residue or additive?)
Tested Velocity: 1315, 1279, 1288, 1295. Average = 1294.25 FPS/ 670 LBS

[Intercooler]

RightToBear gave me 1285 FPS with 10.8gr's. Right on!

[The_Shadow]

Yes these were following powder manufacture's published data except for the yellow dust?   So the velocities were very close or at the stated velocities.

I think the case crimp could have been just a little bit tighter, I'd like to see just a bit more closure at the front edge of the case mouth.

[Intercooler]

   I will pass that on and ask Greg if he can enlighten me on the yellow dust. 

[Intercooler]

The kind of loose crimp... worse case for that would be it could give you set-back?

[The_Shadow]

The bullets were held fairly well by the case tension alone, however it was the very edges that almost seemed to stick out, like the flair was not tapered back against the bullet enough...In a temperamental weapon that might be enough to cause feeding issues.

IC, if you find out about the "Yellow Dust" I'd be very interested to hear what they had to say.