The .17-223 is a centerfire wildcat rifle cartridge. It is based on the .223 Remington, but the neck is re-sized to accept a .17 caliber bullet.

.17-223
Left to right: .17/223 Norma Experimental, .17-223 Frankford Arsenal Experimental F A 7 2, .17-223 Frankford Arsenal Experimental F A 7 3, 4.3x45 D.A.G. Experimental DAG 4.3X45, 4.9x45 D.A.G. Experimental DAG .223, 4.7x45 Experimental DAG 4.7 MM, 4.85x49 Experimental XL1E1 RG 77 4.85
TypeRifle
Place of originUnited States
Specifications
Parent case.223 Remington
Case typeRimless, bottleneck
Bullet diameter.172 in (4.4 mm)
Neck diameter.203 in (5.2 mm)
Shoulder diameter.358 in (9.1 mm)
Base diameter.376 in (9.6 mm)
Rim diameter.378 in (9.6 mm)
Case length1.76 in (45 mm)
Overall length2.15 in (55 mm)
Primer typeSmall rifle
Ballistic performance
Bullet mass/type Velocity Energy
25 gr (2 g) Hornady 3,929 ft/s (1,198 m/s) 875 ft⋅lbf (1,186 J)
25 gr (2 g) Hornady 3,940 ft/s (1,200 m/s) 862 ft⋅lbf (1,169 J)
25 gr (2 g) Hornady 3,989 ft/s (1,216 m/s) 883 ft⋅lbf (1,197 J)
Test barrel length: 22 in (560 mm)
Source(s): Ammo Guide [1]

See also

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References

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