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4 Bore Rifle (Nitro)
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Caliber Specifications:
Caliber: | 4 Bore Rifle (Nitro) |
Standard / Datasheet: | C.I.P. |
Bullet Diameter: | 1.000" | 25.40mm |
Primer Size: | Large Rifle Magnum (LRM) |
Max. Case Length: | 3.990" | 101.35mm |
Max. Cartridge Length / OAL: | 4.700" | 119.38mm |
Max. Standardized Pressure: | 36260 psi | 2500 bar |
Case Capacity: | 780.0 Grains of Water | 50.65 cm3 |
CID: | CID_893 |
Last updated: | 3/19/2025 |
- The 4 Bore Rifle (Nitro) is an extremely large-caliber firearm historically used for big-game hunting and dangerous game. With a bore diameter of approximately 1 inch (25.4mm), it is one of the largest shoulder-fired rifles ever made. Originally designed for black powder, modern 4 Bore rifles use smokeless nitro powder, increasing their velocity and power. These rifles fire massive lead or solid projectiles, often exceeding 1,500 grains, with recoil that is extremely punishing. Custom-built by specialty manufacturers, 4 Bore Nitro rifles are prized for their power, historical significance, and craftsmanship, though they are rare and primarily owned by collectors and enthusiasts.
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Energy (E0)
Ballistic Coefficient (BC1)
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Most popular powders from our community members for caliber 4 Bore Rifle (Nitro):
Weight vs. Velocity - Suitable Bullets for this Caliber
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Barrel Length Variation vs. Velocity - by Bullet Weight
4 Bore Rifle (Nitro) load data available with the following bullets:
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