10mm UNDERWOOD UNLOADED

Underwood 100gr Lehigh Defense Xtreme (100% solid copper) 11/2017
Ballistics Information: 10mm Auto
Muzzle Velocity: 1825 fps
Muzzle Energy: 740 ft. lbs
Brass Make/Headstamp: Underwood – Nickel
Bullet Make/Weight/Construction/Info; Length 0.5555”/Dia. 0.4000”: 100gr XD
Actual weigh 100.2 grains Crimp Diameter 0.3985”
3 power bands / 3 grooves 0.3810”
MEPLAT 0.2325” (wide cross) (inner cross) 0.1180” / concaved base 0.1700”
C.O.A.L.: 1.2505” / 1.2505”
Primer: Large Pistol primer Nickel color
Case: Diameter 0.4215” Crimp Diameter 0.4225”/ 0.4215” (Light Crimp)Length 0.9870”
Powder Description/Positive ID/Type/Charge Weight: Ramshot Silhouette 14.2 grains

Underwood 115gr Lehigh Defense Xtreme Penetrator (100% solid copper)
Ballistics Information: 10mm Auto
Muzzle Velocity: 1700 fps
Muzzle Energy: 737 ft. lbs
Brass Make/Headstamp: Underwood – Nickel
Bullet Make/Weight/Construction/Info; Length 0.6270”/Dia. 0.3995”: 115gr XP
Actual weigh 115.2 grains Crimp Diameter 0.3995”
4 power bands / 3 grooves 0.3645”
MEPLAT 0.2100” (wide cross) (inner cross) 0.1200” / concaved base 0.1125”
C.O.A.L.: 1.2645” / 1.2605”
Primer: Large Pistol Nickel color
Case: Diameter 0.4215” Crimp Diameter 0.4225” (Light Crimp)Length 0.9870”
Powder Description/Positive ID/Type/Charge Weight: Ramshot Silhouette 12.6 grains

Underwood 115gr Lehigh Defense Xtreme Defender (100% solid copper) 11/2017
Ballistics Information: 10mm Auto
Muzzle Velocity: 1700 fps
Muzzle Energy: 738 ft. lbs
Brass Make/Headstamp: Underwood – Nickel
Bullet Make/Weight/Construction/Info; Length 0.6250”/Dia. 0.3995” / 0.4000”: 115gr XD
Actual weigh 115.2 / 115.4 grains Crimp Diameter 0.3995”
4 power bands / 3 grooves 0.3600”
MEPLAT 0.2240” (wide cross) (inner cross) 0.1150” / concaved base 0.1225”
C.O.A.L.: 1.2570” / 1.2660”
Primer: Large Pistol primer Nickel color
Case: Diameter 0.4215” Crimp Diameter 0.4225” / 0.4225” (Light Crimp)Length 0.9875”
Powder Description/Positive ID/Type/Charge Weight: Ramshot Silhouette 12.2 grains

Underwood 135gr Sierra JHP (Redline 8/19)
Ballistics Information: 10mm Auto
Muzzle Velocity: 1600 fps
Muzzle Energy: 768 ft. lbs
Brass Make/Headstamp: Underwood – Nickel
Bullet Make/Weight/Construction/Info; Length 0.4880”/Dia. 0.4000”: 135gr Sierra JHP
Actual weigh 135.4 / 134.8* / 135.2 grains (Flat Base) Crimp Diameter 0.3965”
HP depth 0.2035” / HP dia. 0.2340” / mouth 0.2680”
C.O.A.L.: 1.2475” / 1.2440” / 1.2430”
Primer: Large Pistol Primer Nickel color
Case: Diameter 0.4215” Crimp Diameter 0.4200” Length 0.9880”
Powder Description/Positive ID/Type/Charge Weight: Power Pistol 11.0 / 11.2/ 11.0 grains

Underwood 135gr Sierra JHP
Ballistics Information: 10mm Auto
Muzzle Velocity: 1600 fps
Muzzle Energy: 767 ft. lbs
Brass Make/Headstamp: Underwood – Brass
Bullet Make/Weight/Construction/Info; Length 0.5025”/Dia. 0.4005”: 135gr Sierra JHP
Actual weigh 135.0 grains Crimp Diameter 0.3995”
HP depth HP 0.1865” / HP dia. 0.1565” / mouth 0.2280”
C.O.A.L.: 1.2515”
Primer: Nickel color
Case: Diameter 0.4220” Crimp Diameter 0.4215” Length 0.9880”
Powder Description/Positive ID/Type/Charge Weight: LongShot 13.2 grains
Tested Velocity: 1415 fps

Underwood 135gr Nosler JHP
Ballistics Information: 10mm Auto
Muzzle Velocity: 1600 fps
Muzzle Energy: 767 ft. lbs
Pictures: Before/After disassembly:
Brass Make/Headstamp: Star Line – Brass
Bullet Make/Weight/Construction/Info; Length 0.4880”/Dia. 0.400”: Nosler 135gr. JHP
actual weight 135.2 grains
C.O.A.L.: 1.2520”
Primer: Brass color
Case: Diameter 0.4215” Crimp Diameter 0.4210” Length 0.9870”
Powder Description/Positive ID/Type/Charge Weight: IMR800X 11.8 grains
Picture of powder:
Tested Velocity: 1738 fps

Underwood 135gr Nosler JHP (3/4/2015)
Ballistics Information: 10mm Auto
Muzzle Velocity: 1600 fps
Muzzle Energy: 767 ft. lbs
Brass Make/Headstamp: Underwood – Brass
Bullet Make/Weight/Construction/Info; Length 0.4915”/Dia. 0.4000”: Nosler 135gr. JHP
HP depth 0.2040” / HP dia 0.1800” (tapered) / HP mouth 0.2550” (crimp ring 0.3985”)
Actual weight 134.8 grains (flat base)
C.O.A.L.: 1.2500”
Primer: Large Pistol Nickel color
Case: Diameter 0.4220” Crimp Diameter 0.4230” Length 0.9870”
Powder Description/Positive ID/Type/Charge Weight: LOVEX D037-01 16.4 grains*
*(Very similar to AA#7 by weight)

Underwood 140gr Lehigh Controlled Fracturing Hollow Point (100% solid copper)

Ballistics Information: 10mm Auto

Muzzle Velocity: 1550 fps

Muzzle Energy: 746 ft. lbs

Brass Make/Headstamp: Underwood – Brass

Bullet Make/Weight/Construction/Info; Length 0.6730”/Dia. 0.3910”: 140gr CF

Actual weigh 139.8 grains Crimp Diameter 0.4000” *

HP Depth: 0.4200” / HP Cavity: 0.1730 tapered / HP Mouth 0.2375” (Three segments cut to 0.4045” to the first band)

C.O.A.L.: 1.2540”

Primer: Large Pistol Nickel color

Case: Diameter 0.4215” Crimp Diameter 0.4220” (Light Crimp)Length 0.9870”

Powder Description/Positive ID/Type/Charge Weight: LongShot 11.6 grains

Underwood 140gr Lehigh Defense Xtreme Penetrator (100% solid copper)

Ballistics Information: 10mm Auto

Muzzle Velocity: 1550 fps

Muzzle Energy: 746 ft. lbs

Brass Make/Headstamp: Underwood – Brass

Bullet Make/Weight/Construction/Info; Length 0.6295”/Dia. 0.3955”: 140gr XP

Actual weigh 140.6 grains Crimp Diameter 0.4000” *

MEPLAT 0.2330” (wide cross) (inner cross) 0.1500”

C.O.A.L.: 1.2525”

Primer: Large Pistol Nickel color

Case: Diameter 0.4215” Crimp Diameter 0.4220” (Light Crimp)Length 0.9880”

Powder Description/Positive ID/Type/Charge Weight: LongShot 11.8 grains

Underwood 150gr Nosler JHP
Ballistics Information: 10mm Auto
Muzzle Velocity: 1500 fps
Muzzle Energy: 775 ft. lbs
Brass Make/Headstamp: Underwood – Brass
Bullet Make/Weight/Construction/Info; Length 0.5335”/Dia. 0.4000”: Nosler 150gr JHP
HP Depth 0.2015” / HP Dia. 0.2225” tapered / Mouth 0.2550”
Actual weigh 150.0 grains Crimp Diameter 0.3995”
C.O.A.L.: 1.2465” / 1.2465”
Primer: Nickel color
Case: Diameter 0.4215” Crimp Diameter 0.4225” (light crimp)Length 0.9880”
Powder Description/Positive ID/Type/Charge Weight: IMR800X 10.8 grains

Underwood 155gr Hornady XTP **
Ballistics Information: 10mm Auto
Muzzle Velocity: 1500 fps
Muzzle Energy: 775 ft. lbs
Brass Make/Headstamp: Underwood – Brass
Bullet Make/Weight/Construction/Info; Length 0.??00”/Dia. 0.4000”: Hornady XTP 155gr
HP Depth 0.??0” / HP Dia. 0.??0” tapered / Mouth 0.??0”
Actual weigh 155.0 grains Crimp Diameter 0.3970”
C.O.A.L.: 1.2500”
Primer: Nickel color
Case: Diameter 0.4215” Crimp Diameter 0.4220” (med crimp)Length 0.9860”
Powder Description/Positive ID/Type/Charge Weight: LongShot 10.5 grains

Underwood 155gr Hornady XTP (Redline 8/19)
Ballistics Information: 10mm Auto
Muzzle Velocity: 1500 fps
Muzzle Energy: 775 ft. lbs
Brass Make/Headstamp: Underwood – Nickel
Bullet Make/Weight/Construction/Info; Length 05515”/Dia. 0.4000”: Hornady XTP 155gr
Actual weigh 155.4 / 155.0 / 155.0 grains (Flat Base) Crimp Diameter 0.3970”
HP Depth 0.1820” / HP Dia. 0.1800” tapered / Mouth 0.2100”
C.O.A.L.: 1.2475” / 1.2475” / 1.2480”
Primer: Large Pistol Primer Nickel color
Case: Diameter 0.4215” Crimp Diameter 0.4230” (med crimp)Length 0.9870”
Powder Description/Positive ID/Type/Charge Weight: Power Pistol 11.0 / 11.0 / 11.0 grains

Underwood 155gr Hornady XTP
Ballistics Information: 10mm Auto
Muzzle Velocity: 1500 fps
Muzzle Energy: 775 ft. lbs
Pictures: Before/After disassembly:
Brass Make/Headstamp: Star Line – Brass
Bullet Make/Weight/Construction/Info; Length 0.5510”/Dia.0.400”: Hornady 155gr. XTP
Actual weight 155.4 grains
C.O.A.L.: 1.2520”
Primer: Brass color
Case: Diameter 0.4215” Crimp Diameter 0.4230” Length 0.9875”
Powder Description/Positive ID/Type/Charge Weight: IMR800X 10.8 grains
Picture of powder:
Tested Velocity: 1503 fps

Underwood 155gr TMJ NFP = not for the public!!

Ballistics Information: 10mm Auto

Muzzle Velocity: 1500 fps

Muzzle Energy: 775 ft. lbs

Brass Make/Headstamp: Star Line – Brass

Bullet Make/Weight/Construction/Info; Length 0.5315”/Dia. 0.3995”: 155gr TMJ

Actual weigh 154.8 grains Crimp Diameter 0.3995”

MEPLAT 0.2500”

C.O.A.L.: 1.2515” / 1.2525”

Primer: Brass color

Case: Diameter 0.4215” Crimp Diameter 0.4220” (Light Crimp)Length 0.9900”

Powder Description/Positive ID/Type/Charge Weight: IMR800X 11.2 grains

Underwood 165gr Speer Gold Dot (1/14/2015)
Ballistics Information: 10mm Auto
Muzzle Velocity: 1400 fps
Muzzle Energy: 718 ft. lbs
Brass Make/Headstamp: Underwood – Brass
Bullet Make/Weight/Construction/Info; Length 0.5770”/Dia. 0.4000”: Speer 165gr. GD
Actual weigh 165.4 grains Crimp Diameter 0.3945” (Concaved base)
HP depth 0.1800” / HP cavity 0.2150” tapered / Mouth 0.2850”
C.O.A.L.: 1.2500”
Primer: Nickle color
Case: Diameter 0.4220” Crimp Diameter 0.4220” Length 0.9860”
Powder Description/Positive ID/Type/Charge Weight: LongShot 10.8 grains

Underwood 165gr Speer Gold Dot
Ballistics Information: 10mm Auto
Muzzle Velocity: 1400 fps
Muzzle Energy: 718 ft. lbs
Pictures: Before/After disassembly:
Brass Make/Headstamp: Underwood – Brass
Bullet Make/Weight/Construction/Info; Length 0.5730”/Dia. 0.4005”: Speer 165gr. GD
Actual weigh 165.0 grains Crimp Diameter 0.3950”
HP depth HP 0.1455 / mouth 0.2555”
C.O.A.L.: 1.2500”
Primer: Brass color
Case: Diameter 0.4220” Crimp Diameter 0.4215” Length 0.9880”
Powder Description/Positive ID/Type/Charge Weight: IMR800X 9.6 grains
Picture of powder:
Tested Velocity: 1415 fps

Underwood 165gr Bonded JHP (Redline 8/19)
Ballistics Information: 10mm Auto
Muzzle Velocity: 1400 fps
Muzzle Energy: 718 ft. lbs
Brass Make/Headstamp: Underwood – Nickel
Bullet Make/Weight/Construction/Info; Length 0.5730”/Dia. 0.4005”: Speer 165gr. Gold Dot
Actual weigh 165.2 / 164.6 / 164.0 grains (Concaved Base) Crimp Diameter 0.3945”
HP depth 0.1800” / HP cavity 0.2210” tapered / HP Mouth 0.2850”
C.O.A.L.: 1.2475” / 1.2440” / 1.2450”
Primer: Large Pistol Primer Nickle color
Case: Diameter 0.4215” Crimp Diameter 0.4205” Length 0.9875”
Powder Description/Positive ID/Type/Charge Weight: BE-86 10.2 / 9.8 / 10.0 grains
Cartridge weight: 250.2 / 251.2 / 251.2

Underwood 165gr Speer TMJ
Ballistics Information: 10mm Auto
Muzzle Velocity: 1400 fps
Muzzle Energy: 718 ft. lbs
Brass Make/Headstamp: Underwood – Brass
Bullet Make/Weight/Construction/Info; Length 0.5575”/Dia. 0.4000”: Speer 165gr. TMJ
Actual weigh 163.8 grains Crimp Diameter 0.3995”
C.O.A.L.: 1.2555”
Primer: Nickle color
Case: Diameter 0.4220” Crimp Diameter 0.4225” Length 0.9880”
Powder Description/Positive ID/Type/Charge Weight: LongShot 10.2 grains
Picture of powder:
Tested Velocity: 1415 fps

Underwood 180gr Speer Gold Dot
Ballistics Information: 10mm Auto
Muzzle Velocity: 1400 fps
Muzzle Energy: 784 ft. lbs
Pictures: Before/After disassembly:
Brass Make/Headstamp: Underwood – Brass
Bullet Make/Weight/Construction/Info; Length 0.63550”/Dia. 0.4005”: Speer 180gr. GD
Actual weigh 180.0 grains Crimp Diameter 0.3950”
HP depth HP 0.2200 / mouth 0.2415”
C.O.A.L.: 1.2520”
Primer: Brass color
Case: Diameter 0.4220” Crimp Diameter 0.4215” Length 0.9880”
Powder Description/Positive ID/Type/Charge Weight: IMR800X 9.4 grains
Picture of powder:
Tested Velocity: 1415 fps

Underwood 180gr Bonded JHP (Redline 8/19)
Ballistics Information: 10mm Auto
Muzzle Velocity: 1300 fps
Muzzle Energy: 676 ft. lbs
Brass Make/Headstamp: Underwood – Nickel
Bullet Make/Weight/Construction/Info; Length 0.6385”/Dia. 0.4000”: Speer 180gr. Gold Dot
Actual weigh 181.0 / 179.6 / 181.6 grains Concave Base / Crimp Diameter 0.3945”
HP depth HP 0.2400” / mouth 0.2265” tapered cavity / HP mouth 0.2250”
C.O.A.L.: 1.2520” / 1.2410” / 1.2420”
Primer: Large Pistol Primer Nickel color
Case: Diameter 0.4220” Crimp Diameter 0.4215” Length 0.9880”
Powder Description/Positive ID/Type/Charge Weight: LongShot 8.6 / 8.8 / 8.8 grains
Cartridge weight: 284.8 / 285.4 / 285.6