Lindcott Armory Pistol · SAAMI standardized
.25 NAA
Compact bottleneck pistol cartridge developed by North American Arms, necking down .32 ACP to 25 caliber.
- Introduced
- 2002
- Type
- Pistol
- Origin
- United States
- Inventor
- North American Arms / Corbon
- Manufacturer
- North American Arms
- Standard
- SAAMI standardized
- Status
- Active
- Availability
- Specialty
- Bullet ⌀
- 0.251″
- Case length
- 0.745″
- Overall length
- 0.96″
- Base ⌀
- 0.337″
- Rim ⌀
- 0.337″
- Case capacity
- 4.8 gr H₂O
- Twist
- 1:16
- Primer
- Boxer Small Pistol
- Case type
- Rimless
- Max pressure
- 23,000 psi
- Eff. range
- 100 yd
- Recoil
- 1.5–3 ft·lb
- Subsonic
- Capable
Ballistics
- Velocity
- 1,200–1,450 fps
- Energy
- 140–185 ft·lb
- By real loads
- 1,185–1,550 fps · 19 loads
- Typical MSRP
- $0.85/rd · price history →
- Parent case
- —
Representative trajectory — modeled from a single velocity input, not a measured load. Real published loads span the "by real loads" range above.
Factory loads
In production — 19 active loads across 17 brands. Top 15 shown · see all 19 →.
| Brand | Load | Grain | Bullet | FPS | ft·lb | BC | $/rd |
|---|---|---|---|---|---|---|---|
| Underwood | Underwood Xtreme | 35 | Xtreme Penetrator | 1,550 | 187 | — | $1.30 |
| Cor-Bon | Standard | 35 | JHP | 1,450 | 163 | — | $1.10 |
| HSM | HSM Defense | 35 | JHP | 1,300 | 131 | — | $0.55 |
| Cor-Bon | JHP | 35 | JHP | 1,210 | 114 | — | $1.65 |
| Doubletap | JHP | 35 | JHP | 1,200 | 112 | — | — |
| Hornady | XTP JHP 35gr | 35 | XTP JHP | 1,200 | 112 | — | $0.85 |
| Federal | American Eagle FMJ 35gr | 35 | FMJ | 1,200 | 112 | — | $0.55 |
| Buffalo Arms | FMJ | 35 | FMJ | 1,200 | 112 | — | — |
| NAA/Corbon | HP Guard Dog | 35 | HP | 1,200 | 112 | — | — |
| DoubleTap | JHP 35gr | 35 | JHP | 1,200 | 112 | — | $0.85 |
| Speer | Gold Dot 35gr | 35 | Gold Dot | 1,200 | 112 | — | $1.20 |
| Fiocchi | FMJ | 35 | FMJ | 1,200 | 112 | — | $0.85 |
| Lehigh Defense | Maximum Expansion 35gr | 35 | Maximum Expansion | 1,200 | 112 | — | $2.20 |
| Cor-Bon | HP 35gr +P | 35 | HP | 1,200 | 112 | — | $1.20 |
| PPU | FMJ | 35 | FMJ | 1,200 | 112 | — | $0.55 |
Velocities are manufacturer-stated (test-barrel). Discontinued loads dimmed.
Dimensions
Reloading cost
Estimate your cost per round and how it compares to factory. Inputs are yours — nothing is stored.
Cost estimate only — not load data. Charge weight is your input; follow published manuals for safe charges.
Firearms chambered in .25 NAA
1 model in the database chamber .25 NAA. Browse all →
Connected reference
History
Introduced around 2002 by North American Arms in partnership with CorBon. Created by necking down the .32 ACP case to accept .251" diameter bullets. Designed to give North American Arms mini-revolvers meaningful defensive velocity in an ultra-compact package.
FAQs
- What twist rate does .25 NAA use?
- .25 NAA typically uses a 1:16 twist rate.
- What bullet diameter is .25 NAA?
- .25 NAA uses a 0.251″ (6.3754 mm) diameter bullet.
- Is .25 NAA still in production?
- .25 NAA is active; typical availability is specialty.
- What is .25 NAA used for?
- .25 NAA is primarily used for self-defense.
Data & sources. Specs compiled from the Lindcott Armory reference; availability counted from 19 live factory loads; the trajectory is modeled (point-mass), not measured. Spotted an error? Report it →