Rifle · Not SAAMI standardized · Not standardizedObsolete
.19 Calhoon Hornet
.19 Calhoon Hornet is a rimmed bottlenecked rifle cartridge of United States origin.
- Caliber
- 0.198″ · 5.029 mm
- Introduced
- 1998
- Case
- Rimmed
- Parent
- .22 Hornet
- Primary use
- Hunting
- Status
- Discontinued
- Obsolete
- Obsolete
- Introduced
- 1998
- Type
- Rifle
- Origin
- United States
- Inventor
- James Calhoon
- Manufacturer
- James Calhoon
- Standard
- Not SAAMI standardized · Not standardized
- SAAMI
- Not SAAMI standardized
- Obsolete
- Obsolete
- Status
- Discontinued
- Availability
- Rare
- Case capacity
- 13.7 gr H₂O
- Twist (typical)
- 1:10.5
- Primer
- Small Rifle
- Case type
- Rimmed
- Max pressure
- 49,000 psi, SAAMI transducer
- Eff. range
- 400 yd
- Max range
- 2000 yd
- Recoil
- 0.7 ft·lb
Ballistics
Velocity only, no drag model: no published ballistic coefficient is on file for .19 Calhoon Hornet, so this is the shape gravity alone gives the advertised velocity. Drag would steepen it. The tool below solves real loads through their published G1 or G7 model.
Open in Ballistic Compare- Parent case
- .22 Hornet
Representative trajectory — modeled from a single velocity input (no published BC for this cartridge yet).
Dimensionscase measurements · scale drawing · size vs familiar rounds
Case dimensions — the scale drawing at the top of the page is built from these.
Wikipedia · approximate| Measure | mm | in | ✓ |
|---|---|---|---|
| Bullet ⌀ | 5.03 | 0.198 | · |
| Neck ⌀ | 5.46 | 0.215 | · |
| Shoulder ⌀ | 7.26 | 0.286 | · |
| Shoulder angle | 21.5° | — | |
| Base ⌀ | 7.47 | 0.294 | · |
| Rim ⌀ | 8.89 | 0.350 | · |
| Belt ⌀ | n/a | ||
| Rim thickness | 1.60 | 0.063 | · |
| Neck length | 5.19 | 0.204 | |
| Case length | 35.31 | 1.390 | · |
| Overall length | 47.02 | 1.851 | |
Size vs familiar rounds
Drawn at true 1:1 — every case is accurate relative to the others. Absolute size depends on your screen's pixel density, so measuring one against a real ruler may be off. .19 Calhoon Hornet is highlighted below.
Missing a dimension for .19 Calhoon Hornet? Some case measurements aren't in a published SAAMI/CIP drawing yet. Have a factory or reamer print? Send it → — verified hard-to-find data earns a free Lindcott sticker.
Reloading costestimate cost per round vs factory
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.
Lineage
Connected reference
History
Introduced around 1998 by James Calhoon, derived from the .22 Hornet.
FAQs
- What twist rate does .19 Calhoon Hornet use?
- .19 Calhoon Hornet typically uses a 1:10.5 twist rate.
- What bullet diameter is .19 Calhoon Hornet?
- .19 Calhoon Hornet uses a 0.198″ (5.029 mm) diameter bullet.
- Is .19 Calhoon Hornet still in production?
- .19 Calhoon Hornet is discontinued; typical availability is rare.
- What is .19 Calhoon Hornet used for?
- .19 Calhoon Hornet is primarily used for hunting.
- What is .19 Calhoon Hornet based on?
- .19 Calhoon Hornet is derived from the .22 Hornet case.
Sources & provenance
Data & sources. Specs compiled from the Lindcott Armory reference; the trajectory is modeled (point-mass), not measured. See methodology. Spotted an error? Report it →
