Lindcott Armory Rimfire · SAAMI
.21 Sharp
21 Sharp
Modern Winchester rimfire using a smaller-diameter, non-heeled bullet in a .22 LR-compatible case envelope..
Identity
- Introduced
- 2024
- Type
- Rimfire
- Origin
- United States
- Inventor
- Winchester Ammunition
- Manufacturer
- Winchester
- Standard
- SAAMI
- Status
- Active
- Availability
- Limited
Dimensions
- Bullet ⌀
- 0.2105″
- Case length
- 0.613″
- Overall length
- 0.965″
- Base ⌀
- 0.226″
- Rim ⌀
- 0.278″
- Twist
- 1:12
- Primer
- Rimfire
- Case type
- Rimfire
Performance
- Max pressure
- 24,000 psi
Ballistics
- Velocity
- 1,330–1,750 fps
- Energy
- —
- Parent case
- .22 Long Rifle
Representative trajectory — modeled from a single velocity input, not a measured load.
Dimensions
Lineage
Immediate parent
Size vs parent — to scale
Family TreeOpen .21 Sharp in the interactive cartridge family tree↗Drawn to one scale from published dimensions. Bottleneck shape is approximate (shoulder geometry not recorded).
Connected reference
History
Introduced by Winchester 2024 (SAAMI drawing 2023). SAAMI COAL is a range, 0.965–1.000".
FAQs
- What twist rate does .21 Sharp use?
- .21 Sharp typically uses a 1:12 twist rate.
- What bullet diameter is .21 Sharp?
- .21 Sharp uses a 0.2105″ (5.35 mm) diameter bullet.
- Is .21 Sharp still in production?
- .21 Sharp is active; typical availability is limited.
- What is .21 Sharp used for?
- .21 Sharp is primarily used for target, small game.
- What is .21 Sharp based on?
- .21 Sharp is derived from the .22 Long Rifle case.
Data & sources. Specs compiled from the Lindcott Armory reference; the trajectory is modeled (point-mass), not measured. Spotted an error? Report it →