My .220 Swift is a fantastic rifle and when paired with my Springfield Armory 4-14X scope it is truly an amazing firearm. The ballistics shown below are the result of a year of hard work to perfect a load for my Ruger No.1. The result is a load with only 9 fps standard deviation and phenomenal accuracy. The load uses CCI BR-2 (Benchrest) primers and 42.0 grains of Varget powder behind a 40gr. Nosler CT Moly coated bullet.

Note: All velocities were measured using an Oehler model 33 Chronograph. Ballistics were calculated (and web files were generated) using Ballis-tec software.

.220 SWIFT: 40GR. NOSLER CT MOLY

ICAO STANDARD ATMOSPHERE

DRAG FUNCTION: dragfunctions-spitzer.ini

Recoil for this round is 3.31 ft. lbs.

Condition Parameters

Muzzle Velocity BC Height of sights Angle of departure Atmosphere Rel. Density Temp(°F) Downrange Wind Vel. (mph) Crosswind (mph) Range of Zero Height at 'Zero'
4274 .221 1.5 3.873 .076474 59 0 0 300 0

Exterior Ballistics Table

Range(M) Height Deflection(in.) Velocity(fps) Time of travel(sec.) W1 FP
0 -1.5 0.0 4274 0.000 1.726 1626.428
50 0.5 0.0 4074 0.039 1.645 1477.674
100 1.9 0.0 3873 0.081 1.564 1335.368
150 2.7 0.0 3672 0.124 1.483 1200.270
200 2.7 0.0 3472 0.170 1.402 1072.998
250 1.9 0.0 3271 0.219 1.321 952.279
300 0.0 0.0 3046 0.271 1.230 825.695
350 -3.2 0.0 2829 0.327 1.142 712.165
400 -8.0 0.0 2630 0.387 1.062 615.435
450 -14.8 0.0 2433 0.451 0.983 526.632
500 -23.9 0.0 2239 0.522 0.904 445.945

Maximum range of projectile in a vaccuum (space) : 33392.21 M

Retardation of projectile in air : 6318.4095 fs/sec

Pressure (or resistance) on the meplat : 196.4680 lbs.

Calculated Effective Ballistic coefficient : 0.239

Terminal Ballistics

Optimum Game Weight (OGW): 187 lbs.

Reported sectional density: 0.114

Calculated effective sectional density: 0.118

Forward Momentum rating (FM) : 0.76

Ballistic Efficiency Index of this round out to 500M = 34.20