Description
9mm – Underwood 68 Grain +P Xtreme Defender – 200 Round Case
Single-piece, high-integrity projectile engineered for deep penetration and high retained mass.
Brass-cased, boxer-primed, and packed 200 rounds per box. Intended for defensive and tactical applications
where barrier performance and reliable feeding are priorities.
Ballistic data (typical / estimated)
| Bullet weight | 68 grains |
|---|---|
| Bullet type | Solid monolithic (single-piece solid projectile) |
| Muzzle velocity (est.) | ~1,700 – 1,900 ft/s (9mm +P; varies with barrel length) |
| Muzzle energy (est.) | ~437 – 545 ft·lb (68 gr @ 1,700–1,900 ft/s) |
| Sectional density (SD) | ~0.077 |
| Ballistic coefficient (BC) | ~0.12 – 0.18 (profile dependent) |
Technical specifications
| Cartridge | 9×19mm Parabellum / 9mm Luger (+P) |
|---|---|
| Bullet diameter | 0.355 in (9.02 mm) |
| Case length | ≈0.754 in (19.15 mm) |
| Overall length (OAL) | ≈1.169 in (29.69 mm) — typical 9mm OAL |
| Primer | Small pistol, boxer-style (centerfire) |
| Case material | Brass (generally reloadable; inspect before reuse) |
| Packaging | 200 rounds / box |
| Intended platforms | Semi-automatic pistols and carbines chambered in 9mm; verify +P compatibility with your firearm |
Usage
Primary: self-defense, law-enforcement, and tactical scenarios that require enhanced penetration and retained mass.
Secondary: specialty applications favoring monolithic solids for barrier defeat. Not recommended where controlled expansion
and maximum soft-tissue energy transfer are the priority.
Performance notes
- Penetration: Deep penetration and high retained weight; effective barrier performance (auto glass, doors, light cover).
- Terminal behavior: Minimal expansion vs. hollow points — generally narrow, deep wound channels and greater over-penetration risk.
- Accuracy: Light, high-velocity 68gr projectiles produce a flat trajectory; groups vary by firearm and barrel length.
- Recoil & wear: +P increases chamber pressure — snappier recoil and more muzzle blast; repeated +P use can increase firearm wear if not rated for +P.
- Feeding & reliability: Solid monolithics are robust and typically feed reliably; test in your firearm before duty/carry.
- Reloading: Brass boxer-primed cases are commonly reloadable; inspect primer pockets and case integrity before reloading.
Summary
UNDERWOOD 9MM+P 68GR EXTREME DEFENDER (200-round box, UPC 816874022815) is a +P defensive load built
around a 68-grain solid monolithic projectile. Estimated muzzle velocities are approximately 1,700–1,900 ft/s,
producing roughly 437–545 ft·lb of muzzle energy. The design prioritizes penetration, retained mass, and feed reliability,
at the cost of reduced expansion and increased recoil and firearm stress. Confirm +P compatibility for your firearm, function-test
the load, and follow all applicable safety and legal requirements.
