Buffalo Bore 31A20 45 Auto Rim 255gr Hard Cast Standard Pressure Ammo

Buffalo Bore Ammunition 31A20 delivers proven stopping power for 45 Auto Rim revolvers with 255-grain hard cast flat nose bullets at standard pressure levels. This specialized ammunition combines the penetration advantages of hard cast projectiles with the reliability of standard pressure loads for consistent performance across different revolver platforms.

What Makes This Different

The hard cast flat nose design creates devastating wound channels while maintaining structural integrity through barriers and heavy clothing. Unlike jacketed bullets that can fragment or deform unpredictably, these 255-grain projectiles retain their weight and shape for maximum penetration. Standard pressure loading ensures reliable cycling in vintage and modern revolvers without the excessive wear associated with +P ammunition.

Key Features

• 255-grain hard cast flat nose bullet for maximum penetration and energy transfer
• Standard pressure loading compatible with all 45 Auto Rim revolvers
• Flat nose design creates larger wound channels than round nose projectiles
• Hard cast construction resists deformation through barriers
• Consistent powder charges for shot-to-shot accuracy
• 20 rounds per box with 12 boxes per case (240 total rounds)
• Manufactured to SAAMI specifications for reliable performance

Field testing demonstrates consistent expansion and penetration characteristics across various media. The flat nose profile transfers energy efficiently upon impact while the hard cast construction maintains bullet integrity through automotive glass, heavy clothing, and intermediate barriers. Standard pressure velocities reduce muzzle blast and recoil compared to magnum loads while delivering sufficient energy for hunting and defensive applications.

Technical Specs

• Caliber: 45 Auto Rim
• Bullet Weight: 255 grains
• Bullet Type: Hard Cast Flat Nose
• Pressure Level: Standard (not +P)
• Quantity: 20 rounds per box, 12 boxes per case
• Manufacturer: Buffalo Bore Ammunition
• Model Number: 31A20
• UPC: 651815031019

Buffalo Bore's reputation for consistent quality control and precision loading makes this ammunition a reliable choice for serious shooters. The combination of proven bullet design and standard pressure specifications delivers the performance advantages of premium ammunition without compromising revolver longevity or shooter comfort.