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AR-15Bolt face: 5.56/.223

.450 Bushmaster Ballistics

Big-bore thumper designed by Tim LeGendre and Hornady for large game at moderate range. Common in straight-wall states for deer hunting. Uses standard AR-15 bolt with dedicated magazines.

Cartridge Specifications

SAAMI Max Pressure
38,500 psi
Bullet Diameter
0.452 in
Case Length
1.7 in
Overall Length
2.26 in
Parent Case
.284 Winchester
Bolt Face
5.56/.223
Min Barrel
16 in
Platform
AR-15

Common Bullet Weights and Types

Hornady 250 gr FTXFederal 260 gr Fusion

Muzzle Velocity by Barrel Length

Muzzle Energy by Barrel Length

Bullet Drop Table

Values in inches. 16-inch barrel reference data. Positive values rise above line of sight, negative values fall below.

LoadZero100 yd200 yd300 yd400 yd500 yd
158 gr FTX200 yd2.80-14-42-
250 gr FTX200 yd3.50-16-47.5-
260 gr Fusion200 yd3.70-16.5-49-

Wind Drift at 10 mph Crosswind

Drift in inches at a 90 degree full value wind. Estimated from muzzle velocity and G1 ballistic coefficient.

Load100 yd200 yd300 yd400 yd500 yd
158 gr FTX9.418.828.237.647
250 gr FTX10.320.630.841.151.4
260 gr Fusion10.420.831.241.652

Effective Range by Application

Large game hunting0 to 200 yd
Self-defense0 to 100 yd

Barrel Twist Rate Recommendations

250 to 300 gr1:24

Published Load Data

WeightTypeBarrelMV (fps)ME (ft-lb)BC (G1)Source
158 grFTX16 in2,3501,9370.21Hornady .450 Bushmaster 158gr FTX published load data
158 grFTX18 in2,4002,0200.21Hornady .450 Bushmaster 158gr FTX published load data
158 grFTX20 in2,4502,1050.21Hornady .450 Bushmaster 158gr FTX published load data
250 grFTX16 in2,1502,5660.21Hornady .450 Bushmaster 250gr FTX published load data
250 grFTX18 in2,2002,6860.21Hornady .450 Bushmaster 250gr FTX published load data
250 grFTX20 in2,2402,7850.21Hornady .450 Bushmaster 250gr FTX published load data
260 grFusion16 in2,1002,5460.215Federal Fusion .450 Bushmaster 260gr published specs
260 grFusion18 in2,1502,6680.215Federal Fusion .450 Bushmaster 260gr published specs
260 grFusion20 in2,1902,7680.215Federal Fusion .450 Bushmaster 260gr published specs

Data Disclaimer

Ballistic data is approximate and varies by ammunition lot, barrel condition, altitude, and temperature. Data sourced from Hornady .450 Bushmaster 158gr FTX published load data; Hornady .450 Bushmaster 250gr FTX published load data; Federal Fusion .450 Bushmaster 260gr published specs. Always confirm zero and trajectory with your specific firearm.

Pick the right barrel

Twist rate should match the bullet weights you plan to shoot. See barrel steel grades, profiles, chamber types, and twist rate guidance on the barrel specs page, then jump into the builder to filter barrels chambered in .450 Bushmaster.