91255
Critical DUTY®
10mm AUTO 175 gr. FlexLock®

10mm AUTO 175 gr. FlexLock® - Item No. 91255

cartridge
cutaway

The patented Hornady® Flex Tip® design of the FlexLock® bullet eliminates clogging and aids bullet expansion. A large mechanical jacket-to-core InterLock® band works to keep the bullet and core from separating for maximum weight retention, excellent expansion and consistent penetration and terminal performance through all FBI test barriers.

The FlexLock® is an “intelligent bullet” that reacts differently depending on the barrier it encounters, delivering “barrier blind” performance after penetrating urban barriers such as plywood, sheet metal and even auto glass.

Bright nickel plated cases eliminate cartridge case tarnish, and the highly visible silver nickel simplifies chamber checks in reduced light. Additionally, all Critical DUTY® ammunition is loaded with low flash propellant to help preserve night vision in low-light firing.

For the ultimate in tactical terminal ballistic performance through all FBI established urban barriers, choose Critical DUTY® ammunition.

BULLET

  • Ballistic Coefficient: .155
  • Sectional Density: .156
  • Recommended Rifling Twist Rate: Best terminal performance achieved in 1:10" twist
  • Characteristics: Flex Tip®, InterLock®
  • FlexLock®

CASE

10mm AUTO
  • Manufacturer's name (Hornady) and caliber designation (10MM) imprinted on case head
  • Nickel Plated

POWDER & PRIMER

  • Powder: Temperature stable with flash retardant
  • Primer: Sealed primer, Small pistol, Sealed case mouth

PACKAGING & LOT NUMBERS

  • 50 rounds per box
  • 10 boxes per case (500 rounds per case)
  • Lot numbers on each box and case
5" Factory Test Barrel Muzzle 50 Yards 100 Yards
Velocity (fps) 1129 1036 969
Energy (ft lbs) 495 417 365
Firearm:
Factory Test Barrel
Barrel:
5"
Substrate Material Total Penetration Max Cavity Depth of Max Cavity Initial Penetration Retained Weight Retained Percentage Expanded Diameter
Bare Gelatin scale 13.25" 2.5" 3.25" 0.25" 172.5 gr 99% 0.66"
Heavy Clothing scale 14.5" 2.75" 3" 0.25" 173.1 gr 99% 0.63"
Steel scale 15.75" 2.25" 2.5" 0" 172.8 gr 99% 0.56"
Wallboard scale 13" 3.25" 3" 0.25" 168.4 gr 96% 0.67"
Plywood scale 14" 2.25" 2.5" 0.25" 170.1 gr 97% 0.68"
Auto Glass scale 14" 1.75" 4" 0" 139.5 gr 80% 0.55"

Critical Duty 357 SIG Cartridge Evaluation

Thank you for participating in our Member Tested and Recommended Program. The Critical Duty 357 SIG Cartridges have been tested and recommended by the members of the National Tactical Officers Association.…

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45 Auto +P FlexLock Critical DUTY® Evaluation

Thank you for participating in our “Member Tested and Recommended Program.” The 45 Auto +P FlexLock Critical DUTY® has been tested and recommended by the members of the National Tactical Officers Association.…

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Sgt. Sim Thacker

I am a sergeant with a sheriffs office and recently was attacked by a large dog. Having no choice I was forced to dispatch the animal. The .45 ACP critical duty round stopped the dog and saved me from…

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Sean Dexter

Primary Firearms Instructor/K-9 Handler Beverly Hills PDTo The Fine Staff At Hornady,I just want to thank you for producing the best ammunition on the face of this planet. I use your…

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Ballistics

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Muzzle
50 Yards
100 Yards
Energy (Ft lbs)
Muzzle
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100 Yards

Bare Gelatin

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Gelatin: Auto Glass

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Gelatin: Wallboard

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Gelatin: Plywood

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Gelatin: Steel

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Total Penetration (Inches)
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Gelatin: Heavy Clothing

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Total Penetration (Inches)
Depth of Max Cavity (Inches)
Max Cavity (Inches)
Initial Penetration (Inches)
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Retained Percentage