Description
Finding quality brass for a classic Nitro Express chambering is half the battle, and Hornady has long been the go-to source for keeping these old safari rounds alive. This is new, unprimed brass for the .450-400 Nitro Express 3", a rimmed, bottlenecked cartridge also known as the 400 Jeffery that dates back to 1902 and earned its reputation in the hands of hunters chasing dangerous game in Africa and India. If you own a double rifle or single-shot chambered for it, consistent brass is the starting point for ammo that groups the way a regulated double is meant to.
What Sets This .450-400 Nitro Express Brass Apart
Hornady treats its brass as the foundation of an accurate cartridge rather than a throwaway component. Each case is measured for tight wall concentricity, which helps seat the bullet straight in both the case and the chamber so it releases cleanly on firing. The cases are also held to uniform wall thickness and consistent internal capacity, two things that matter a great deal when you are trying to hit a regulated point of impact at close dangerous-game ranges.
Built for Reloaders Who Load Their Own 400 Jeffery
Components for this cartridge do not grow on trees, so Hornady runs these cases through a pressure calibration test to confirm uniform expansion during firing, and every case is hand inspected before it leaves the plant. The .450-400 3" throws a .410-inch diameter 400-grain bullet at right around 2,050 fps in modern loadings, delivering deep penetration with recoil that is noticeably more manageable than the bigger bore Nitros. That blend of penetration and shootability is a big part of why this chambering stays popular with double rifle owners.
This is a box of 20 unprimed cases carrying the Hornady headstamp. It is brass only, not loaded ammunition, so you will supply your own primers, powder, and projectiles to build your loads.
Key Specifications
- Manufacturer: Hornady
- Cartridge: .450-400 Nitro Express 3" (400 Jeffery)
- Component Type: Unprimed Rifle Cartridge Cases
- Case Material: Brass
- Quantity: 20 per box
- Primed: No
- Bullet Diameter: .410 in
- Case Type: Rimmed, bottleneck
- Country of Origin: USA
- Manufacturer Part Number: 86934
- UPC: 090255869347
What’s Included
- 20 new, unprimed Hornady .450-400 Nitro Express 3" brass cases
Frequently Asked Questions
Is this .450-400 Nitro Express brass primed or loaded?
No. This is new, unprimed brass only, not loaded ammunition. You will add your own primers, powder, and bullets to build finished cartridges.
What cartridge does this brass fit?
It is made for the .450-400 Nitro Express 3", which is the same cartridge commonly called the 400 Jeffery. It is a rimmed, bottlenecked case designed for single-shot and double rifles, and it uses a .410-inch diameter bullet.
How many cases come in a box?
Each box contains 20 cases carrying the Hornady headstamp. For a cartridge this specialized, that is a solid starting supply for a double or single-shot rifle owner who likes to work up and track their own loads.
Why choose Hornady brass for a cartridge this old?
Hornady has kept a lot of the classic safari chamberings alive by producing both ammunition and components for them. Their cases are measured for tight wall concentricity, pressure tested for uniform expansion, and hand inspected, which gives handloaders a consistent, repeatable foundation for a cartridge that is hard to find elsewhere.




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