.220 Swift

Key specs

Type

Rifle

Origin

United States

Designer

Winchester

Introduced

1935

Case type

semi-rimmed, bottleneck

Bullet diameter

5.69 mm

Case length

56.01 mm

Overall length

68.07 mm

Typical bullet

40 gr

Typical velocity

1,284 m/s

Typical energy

2,138 J

Parent case

6mm Lee Navy