.450 N.E. 3 1/4'' Load Data & Reloading Guide
Also known as: .450 Nitro Express 3 1/4", .450 N.E. 3.25", .450 NE 3 1/4"
About .450 N.E. 3 1/4''
The .450 Nitro Express 3 1/4 inch was developed in the late 19th century, primarily for big-game hunting in Africa and India. This caliber became popular during the golden age of safari hunting due to its exceptional stopping power for dangerous game like elephant, rhino, and buffalo. It was introduced by John Rigby & Company, part of the Nitro Express series, and remains a classic choice among collectors and traditional hunters.
Technically, the .450 Nitro Express 3 1/4 inch cartridge uses a rimmed, bottleneck case design, optimized for use in break-action rifles. It typically propels a 480 to 500-grain bullet at velocities around 2,150 feet per second, generating significant energy to ensure deep penetration and reliable performance on large game. The cartridge's dimensions allow a large powder capacity, essential for achieving the high energy levels for which it is renowned.
In terms of performance, the .450 Nitro Express is noted for its formidable stopping power and ability to deliver massive energy to its targets. Its ballistic trajectory is designed for ranges typically encountered during African safaris, providing hunters with confidence in close quarters. Bullet construction for this caliber is critical, often utilizing solid brass or lead-core bullets with copper jackets to handle the velocity and ensure controlled expansion or penetration as needed.
For reloaders, the .450 Nitro Express offers several advantages. While factory ammunition is often expensive and sometimes hard to find, reloading allows enthusiasts to tailor loads to specific rifles, optimizing for accuracy and comfort. Brass cases tend to be good for multiple reloads, allowing for cost-effective shooting. Precise handloads can help in managing recoil, extending the usefulness of historic firearms while maintaining their authenticity for modern hunts.
Technical Drawing

Technical Specifications
Start Calculating to Develop your own Load Data for .450 N.E. 3 1/4''
Use our professional ballistics calculator to develop safe and accurate load recipes for .450 N.E. 3 1/4''.
Start CalculatingStandard Load Data — .450 N.E. 3 1/4''
Select your desired cartridge and bullet weight below to access the corresponding load table. From there, you can choose any listed load recipe and transfer it directly into the ballistics calculator for further refinement, optimization, and precision tuning.
.458 | 500gr | A-Square DeadTough
.458 | 350gr | Rhino Penetrator
.458 | 300gr | Nosler Partition PP
.458 | 305gr | Lehigh Defense Xtreme Penetrator
.457 | 350gr | Frontier PH HPFB
.458 | 260gr | Reichenberg Spezial Jagd
.458 | 300gr | Hornady InterLock
.458 | 300gr | CamPro FCP RNFP
.458 | 450gr | AERO SORN,- smax:18.40
.457 | 360gr | Rhino Solid Shank L1.024
.458 | 300gr | Impala LWHV LS
.458 | 400gr | Barnes Original Semi Spitzer
.458 | 260gr | CutEdge HG
.458 | 500gr | Hornady InterBond RN
.458 | 405gr | CamPro FCP RNFP
.458 | 500gr | Remington FMC RN
.458 | 500gr | Nosler Partition PP
.458 | 220gr | AERO SB-SR,- smax:11.10
.458 | 400gr | Barnes X S
.458 | 450gr | Barnes TSX FB
.458 | 480gr | Woodleigh HS
.457 | 480gr | CutEdge DGBR
.458 | 292gr | Sax KJG-BCS
.458 | 250gr | TWENTY-NINE HP
Frequently Asked Questions
The maximum pressure for .450 N.E. 3 1/4'' is 44,237 psi | 3,050 bar.
.450 N.E. 3 1/4'' typically uses a Large Rifle Magnum (LRM) primer.
The case capacity of .450 N.E. 3 1/4'' is approximately 136 grains of water (H₂O).