Rifle · Proprietary
.499 LWR
A straight-walled .50-caliber-class big-bore designed by the Leitner-Wise Rifle Company to give the AR-15 real knock-down power the 5.56 NATO lacks.
- Introduced
- 2000
- Type
- Rifle
- Origin
- United States
- Inventor
- Leitner-Wise Rifle Company
- Manufacturer
- Leitner-Wise Rifle Company
- Standard
- Proprietary
- Status
- Obsolete
- Availability
- Scarce
- Bullet ⌀
- 0.499″
- Case length
- 1.6″
- Overall length
- 2.26″
- Base ⌀
- 0.542″
- Twist
- 1:18
- Primer
- Large Rifle
- Case type
- Rebated Rimless
- Max pressure
- 35,000 psi
- Eff. range
- 200 yd
- Max range
- 1000 yd
- Recoil
- 20–30 ft·lb
Ballistics
- Velocity
- 1,600–2,200 fps
- Energy
- 2,600–3,400 ft·lb
- Parent case
- —
Representative trajectory — modeled from a single velocity input, not a measured load.
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.
Connected reference
History
Conceived in 1994 and shown at the 2000 SHOT Show, the .499 LWR drew a U.S. Coast Guard development contract that was cancelled in early 2004. It predated and paralleled the .458 SOCOM and .50 Beowulf but never reached production volume; today it survives mainly as collector ammunition and limited brass runs.
FAQs
- What twist rate does .499 LWR use?
- .499 LWR typically uses a 1:18 twist rate.
- What bullet diameter is .499 LWR?
- .499 LWR uses a 0.499″ (12.675 mm) diameter bullet.
- Is .499 LWR still in production?
- .499 LWR is obsolete; typical availability is scarce.
- What is .499 LWR used for?
- .499 LWR is primarily used for hunting.
Data & sources. Specs compiled from the Lindcott Armory reference; the trajectory is modeled (point-mass), not measured. Spotted an error? Report it →
Lindcott Armory