Lindcott Armory Rifle · Obsolete / Non-standard
.280 Jeffery
.280 Jeffery Rimless7mm Jeffery.33/280 Jeffery.280 Jeffery Rimless Nitro Express
Obscure early British 7 mm sporting cartridge from Jeffery, made by necking down the .333 Jeffery..
Identity
- Introduced
- 1913
- Type
- Rifle
- Origin
- United Kingdom
- Manufacturer
- W.J. Jeffery & Co.
- Standard
- Obsolete / Non-standard
- Status
- Obsolete
- Availability
- Collector
Dimensions
- Bullet ⌀
- 0.288″
- Primer
- Large Rifle
- Case type
- Rimless
Ballistics
Published velocity/energy data isn't available for .280 Jeffery — an obsolete/collector cartridge. Parent case: .333 Jeffery.
Reloading cost
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
Immediate parent
Family TreeOpen .280 Jeffery in the interactive cartridge family tree↗Connected reference
History
W.J. Jeffery, 1913; ~140 gr at ~3,000 fps. Genuinely distinct from the .280 Ross (different maker/design).
FAQs
- What bullet diameter is .280 Jeffery?
- .280 Jeffery uses a 0.288″ (7.32 mm) diameter bullet.
- Is .280 Jeffery still in production?
- .280 Jeffery is obsolete; typical availability is collector.
- What is .280 Jeffery used for?
- .280 Jeffery is primarily used for hunting.
- What is .280 Jeffery based on?
- .280 Jeffery is derived from the .333 Jeffery case.
Data & sources. Specs compiled from the Lindcott Armory reference; the trajectory is modeled (point-mass), not measured. Spotted an error? Report it →