Handgun · Wildcat
7x45mm Ingram
A 7mm-on-.223-Improved Contender wildcat (also written 7mm x 223 Improved)..
- Caliber
- 0.284″ · 7.214 mm
- Introduced
- 1963
- Case
- Rimless
- Parent
- .223 Remington
- Primary use
- Hunting
- Status
- Wildcat
- Introduced
- 1963
- Type
- Handgun
- Origin
- United States
- Inventor
- Dave Ingram
- Manufacturer
- Handloaded only (wildcat; no factory ammunition)
- Standard
- Wildcat
- Status
- Wildcat
- Availability
- Rare
- Case capacity
- 33.1 gr H₂O
- Twist (typical)
- 1:10
- Primer
- Small Rifle
- Case type
- Rimless
- Max pressure
- 55,000 psi, SAAMI transducer
- Eff. range
- 150 yd
- Max range
- 4200 yd
- Recoil
- 6–6.4 ft·lb
Ballistics
Velocity only, no drag model: no published ballistic coefficient is on file for 7x45mm Ingram, 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
- .223 Remington
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.
reloading data · approximate| Measure | mm | in | ✓ |
|---|---|---|---|
| Bullet ⌀ | 7.21 | 0.284 | · |
| Neck ⌀ | 7.72 | 0.304 | · |
| Shoulder ⌀ | 9.27 | 0.365 | · |
| Shoulder angle | 45° | — | ~ |
| Base ⌀ | 9.55 | 0.376 | · |
| Rim ⌀ | 9.60 | 0.378 | · |
| Belt ⌀ | n/a | ||
| Rim thickness | 1.14 | 0.045 | · |
| Neck length | 5.82 | 0.229 | ≈ |
| Case length | 45.00 | 1.772 | · |
| Overall length | 68.20 | 2.685 | · |
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. 7x45mm Ingram is highlighted below.
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
The 7x45mm Ingram was by Dave Ingram, based on the .223 Remington case.
FAQs
- What twist rate does 7x45mm Ingram use?
- 7x45mm Ingram typically uses a 1:10 twist rate.
- What bullet diameter is 7x45mm Ingram?
- 7x45mm Ingram uses a 0.284″ (7.214 mm) diameter bullet.
- Is 7x45mm Ingram still in production?
- 7x45mm Ingram is wildcat; typical availability is rare.
- What is 7x45mm Ingram used for?
- 7x45mm Ingram is primarily used for hunting.
- What is 7x45mm Ingram based on?
- 7x45mm Ingram is derived from the .223 Remington case.
Sources & provenance
- Manufacturer Hornady — Hornady Obsolete Load Data — 7x45 Ingram (Handgun Data) · bullet ⌀, velocity, grain weights archived
- Secondary Wolfe Publishing (LoadData.com) — Reloading Data: 7x45 Ingram (7mmx223 Improved) — Hornady Handbook 7th & 8th Editions · velocity, grain weights archived
Data & sources. Specs compiled from the Lindcott Armory reference; the trajectory is modeled (point-mass), not measured. See methodology. Spotted an error? Report it →
