Barnes Original Hunting Rifle Bullet .38-55 Winchester 0.375in Dia 255 Grain Flat Nose Flat Base 50 Bullets. Because of the design this bullet is extremely reliable and was the first custom bullet that American hand loaders could purchase. These are not for reloading but are live ammunition. When the Barnes Original Rifle Bullets impact their target they usually expand over 200 percent of the original diameter while retaining up to 90 percent of their initial weight. When the Barnes Original Gun Bullets impact their target they usually expand over 200 percent of the original diameter while retaining up to 90 percent of their initial weight. These are not for reloading but are live ammunition. Specifications for Barnes Original Hunting Rifle Bullet .38-55 Winchester 0.375in Dia 255 Grain Flat Nose Flat Base: Manufacturer: Barnes Bullet Type: Flat Nose Flat Base Caliber: .38-55 Winchester Bullet Weight: 255 grain Projectile Caliber: .375 Caliber Bullet Quantity: 50 Bullet Type: Bullet Country of Origin: USA Fabric/Material: Copper Package Contents: Barnes Original Hunting Rifle Bullet .38-55 Winchester 0.375in Dia 255 Grain Flat Nose Flat Base Barnes 30497: Original Hunting Rifle Bullet .38-55 Winchester 0.375in Dia 255 Grain Flat Nose Flat Base 50 Bullets