8mm Roth–Steyr

Type

Pistol

Place of origin

Austria-Hungary

Specifications

Case type

Rimless, straight

Bullet diameter

8.16 mm (0.321 in)

Neck diameter

8.80 mm (0.346 in)

Base diameter

8.85 mm (0.348 in)

Rim diameter

8.85 mm (0.348 in)

Case length

18.65 mm (0.734 in)

Overall length

29.00 mm (1.142 in)

Ballistic performance

Bullet mass/type	Velocity	Energy
116 gr (8 g) FMJ	1,088 ft/s (332 m/s)	302 ft·lbf (409 J)
113 gr (7 g) FMJ	1,070 ft/s (330 m/s)	290 ft·lbf (390 J)

Source(s): "Textbook of Automatic Pistols"

The 8mm Roth–Steyr is a military centerfire pistol cartridge adopted by the Austro-Hungarian cavalry in 1907 for the Repetierpistole M7—the first self-loading pistol adopted by a major military power. The cartridge headspaces on the mouth of the case. Ammunition was typically packaged in a unique ten-round charger. Austrian military production contained greased un-plated steel-jacketed bullets. A few private firms in Austria manufactured ammunition with cupro-nickel-jacketed bullets.Fiocchi Munizioni manufactured 8mm Roth–Steyr cartridges as one of its specialty lines as recently as 2017. An alternative source of reloadable cartridge cases is a labor-intensive process of base forming, trimming, neck reaming and resizing .30 Carbine brass.

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Wikipedia