Lindcott Armory Rifle · Military
8x60mmR Guedes
Single-shot military rifle cartridge developed for the Portuguese Guedes rifle; a transitional arm between single-shot black powder and repeating small-bore military rifles..
- Caliber
- 0.326″ · 8.28 mm
- Introduced
- 1885
- Case
- Rimmed
- Primary use
- Military service
- Status
- Discontinued
- Introduced
- 1885
- Type
- Rifle
- Origin
- Portugal
- Inventor
- Portuguese military
- Standard
- Military
- Status
- Discontinued
- Availability
- Rare
- Primer
- Berdan Large Rifle
- Case type
- Rimmed
- Max pressure
- 49,313 psi
- Eff. range
- 250 yd
Ballistics
- Parent case
- —
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 ⌀ | 8.28 | 0.326 | · |
| Neck ⌀ | 8.71 | 0.343 | · |
| Shoulder ⌀ | 12.21 | 0.481 | ~ |
| Shoulder angle | 12.7° | — | ~ |
| Base ⌀ | 13.77 | 0.542 | · |
| Rim ⌀ | 15.80 | 0.622 | ~ |
| Belt ⌀ | n/a | ||
| Rim thickness | 1.65 | 0.065 | ~ |
| Neck length | 14.22 | 0.560 | ≈ |
| Case length | 59.99 | 2.362 | ~ |
| Overall length | 83.59 | 3.291 | ~ |
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. 8x60mmR Guedes 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.
Connected reference
History
Developed for the Guedes Model 1885 single-shot falling-block rifle, Portugal's last major black powder single-shot military arm. Replaced shortly after by the 8x60mmR Kropatschek tubular magazine rifle, making the Guedes cartridge one of the shortest-lived major military cartridges.
FAQs
- What bullet diameter is 8x60mmR Guedes?
- 8x60mmR Guedes uses a 0.326″ (8.28 mm) diameter bullet.
- Is 8x60mmR Guedes still in production?
- 8x60mmR Guedes is discontinued; typical availability is rare.
Sources & provenance
- SecondaryCartridgeCollector.net — 8 x 60R Guedes · bullet ⌀, grain weightsarchived
- SecondaryWikipedia — Guedes Rifle · year, velocity, grain weightsarchived
- SecondaryInternational Ammunition Association Forum — Designs — 8x60R M1885 Guedes / 8x60R M1886 Kropatschek · 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 →