Barnes Bullets TAC-XP MLE 10mm Auto 140gr .400 40ct
- Capacity-Rounds:
- 40
- Caliber-Gauge:
- 10mm/40 Smith & Wesson
- Grain:
- 140
- OAL:
- .682"
- Quantity:
- 40 Per Box
- Bullet Tip Material:
- Hollow Point
- Core Material:
- Copper Solid
- Jacket Material:
- Copper Solid
- Recommended Usage:
- Personal Protection
- Sectional Density:
- 0.125
- Bullet Diameter:
- 0.4
- Cannelure:
- No
- Coefficient:
- 0.128
Barnes Bullets TAC-XP MLE ammunition delivers controlled expansion and reliable performance in 10mm Auto, engineered for handloaders who demand precision and consistency. This 140-grain .400 offering is purpose-built for tactical and defensive applications where shot-to-shot uniformity matters. Whether you're developing loads for duty weapons or custom self-defense ammunition, Barnes' commitment to quality manufacturing ensures every round performs to spec.
The TAC-XP MLE bullet design prioritizes barrier-blind expansion and deep penetration—critical factors in real-world scenarios. Barnes manufactures these projectiles to exacting tolerances, which means better accuracy potential and easier handloading when you're working up loads on your press. With 40 rounds per box, you've got enough to develop a solid load ladder or establish a reliable duty round without overcommitting to untested ammunition.
Handloaders choosing Barnes projectiles benefit from the company's decades of bullet-making expertise and their focus on controlled, consistent expansion. The TAC-XP MLE line reflects modern defensive ammunition principles—something you won't find in generic, mass-produced alternatives. If you're reloading 10mm for serious use, this is the kind of component that separates a carefully assembled round from something that just happens to go bang.
Specifications
| Caliber | 10mm Auto |
| Bullet Weight | 140 grains |
| Bullet Diameter | .400" |
| Quantity | 40 count |
| Manufacturer | Barnes Bullets |
| Bullet Type | TAC-XP MLE (Tactical-eXpanding, Monolithic Lead-free Expansion) |
Frequently Asked Questions
What is the TAC-XP MLE bullet designed for?
The TAC-XP MLE (Tactical-eXpanding, Monolithic Lead-free Expansion) is engineered for defensive and tactical applications, with controlled expansion and deep penetration characteristics. It's purpose-built for serious use scenarios where reliable performance is non-negotiable.
Are these bullets suitable for reloading duty or self-defense ammunition?
Yes. The TAC-XP MLE is specifically designed for handloaders developing defensive and tactical loads. Barnes' attention to consistency and expansion performance makes these bullets a logical choice for custom duty and self-defense ammunition assembly.
How many rounds are in this box?
Each box contains 40 bullets, giving you enough to develop a comprehensive load workup or establish a proven defensive load without committing to excessive quantities while testing.
What makes Barnes bullets different from standard 10mm projectiles?
Barnes manufactures to exacting tolerances with consistent quality control, meaning better shot-to-shot uniformity and more predictable expansion performance than generic alternatives. Their monolithic bullet construction eliminates many variables that plague traditional designs.

