Lindcott Armory Handgun
7mm International Rimmed
The .30-30 Winchester necked to 7mm — a rimmed wildcat suited to break-action and single-shot pistols..
- Caliber
- 0.284″ · 7.214 mm
- Introduced
- 1975
- Case
- Bottleneck
- Parent
- .30-30 Winchester
- Status
- Wildcat
- Introduced
- 1975
- Type
- Handgun
- Status
- Wildcat
- Availability
- Rare
- Primer
- Large Rifle
- Eff. range
- 200 yd
Ballistics
- Parent case
- .30-30 Winchester
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.
SAAMI · approximate| Measure | mm | in | ✓ |
|---|---|---|---|
| Bullet ⌀ | 7.21 | 0.284 | ~ |
| Neck ⌀ | 7.87 | 0.310 | ~ |
| Shoulder ⌀ | 10.21 | 0.402 | ~ |
| Shoulder angle | 38° | — | ~ |
| Base ⌀ | 10.72 | 0.422 | ~ |
| Rim ⌀ | 12.85 | 0.506 | ~ |
| Belt ⌀ | n/a | ||
| Rim thickness | 1.60 | 0.063 | ~ |
| Neck length | — | — | |
| Case length | 51.82 | 2.040 | ~ |
| Overall length | — | — | |
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. 7mm International Rimmed is highlighted below.
Missing a dimension for 7mm International Rimmed? 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.
Connected reference
History
The .30-30 Winchester necked to 7mm — a rimmed wildcat suited to break-action and single-shot pistols.
FAQs
- What bullet diameter is 7mm International Rimmed?
- 7mm International Rimmed uses a 0.284″ (7.214 mm) diameter bullet.
- Is 7mm International Rimmed still in production?
- 7mm International Rimmed is wildcat; typical availability is rare.
- What is 7mm International Rimmed based on?
- 7mm International Rimmed is derived from the .30-30 Winchester case.
Sources & provenance
- ReferenceGun Digest Books (Krause) — Cartridges of the World · year, bullet ⌀, velocity, grain weights
- SecondaryCartridgeCollector.net — 7mm International (Rimmed) · bullet ⌀archived
- SecondaryWouter's Gundex (retro.co.za) — 7mm International Rimmed · year, bullet ⌀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 →