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AR-10Bolt face: .308

.243 Winchester Ballistics

The .243 Winchester is a versatile AR-10 caliber suitable for varmint hunting with light bullets and deer hunting with heavier projectiles. Low recoil makes it popular for new and recoil-sensitive shooters.

Cartridge Specifications

SAAMI Max Pressure
60,000 psi
Bullet Diameter
0.243 in
Case Length
2.045 in
Overall Length
2.71 in
Parent Case
.308 Winchester
Bolt Face
.308
Min Barrel
22 in
Platform
AR-10

Common Bullet Weights and Types

Hornady 55 gr V-MAXHornady 95 gr SSTFederal 100 gr SP

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
55 gr V-MAX200 yd0.70-4.2-13.2-28.5
55 gr V-MAX200 yd0.70-4.2-13.2-28.5
55 gr V-MAX200 yd0.70-4.2-13.2-28.5
95 gr SST200 yd1.30-6-17.5-35
95 gr SST200 yd1.30-6-17.5-35
95 gr SST200 yd1.30-6-17.5-35
100 gr SP200 yd1.40-6.3-18.3-37
100 gr SP200 yd1.40-6.3-18.3-37
100 gr SP200 yd1.40-6.3-18.3-37

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
55 gr V-MAX5.210.415.620.826
55 gr V-MAX5.110.215.320.425.6
55 gr V-MAX510.115.120.225.2
95 gr SST59.914.919.824.8
95 gr SST4.99.814.619.524.4
95 gr SST4.89.614.419.224
100 gr SP51014.919.924.9
100 gr SP4.99.814.719.624.5
100 gr SP4.89.614.419.324.1

Effective Range by Application

Varmint0 to 500 yd
Deer hunting0 to 400 yd
Competition0 to 600 yd

Barrel Twist Rate Recommendations

55 to 80 gr1:10
80 to 100 gr1:9 or 1:10

Published Load Data

WeightTypeBarrelMV (fps)ME (ft-lb)BC (G1)Source
55 grV-MAX20 in3,8101,7720.255Hornady .243 Win 55gr V-MAX published load data
55 grV-MAX22 in3,8701,8290.255Hornady .243 Win 55gr V-MAX published load data
55 grV-MAX24 in3,9251,8810.255Hornady .243 Win 55gr V-MAX published load data
95 grSST20 in3,0501,9620.355Hornady .243 Win 95gr SST published load data
95 grSST22 in3,1002,0270.355Hornady .243 Win 95gr SST published load data
95 grSST24 in3,1502,0930.355Hornady .243 Win 95gr SST published load data
100 grSP20 in2,9501,9320.365Federal Power-Shok .243 Win 100gr SP published data
100 grSP22 in3,0001,9980.365Federal Power-Shok .243 Win 100gr SP published data
100 grSP24 in3,0502,0650.365Federal Power-Shok .243 Win 100gr SP published data

Data Disclaimer

Ballistic data is approximate and varies by ammunition lot, barrel condition, altitude, and temperature. Data sourced from Hornady .243 Win 55gr V-MAX published load data; Hornady .243 Win 95gr SST published load data; Federal Power-Shok .243 Win 100gr SP published data. 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 .243 Winchester.