Steyr Roth M1907

kurusu · 01-06-2017, 07:14 PM

From wikipedia:

"8mm Roth–Steyr
8mm Steyr - FMJ - 2.jpg
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" [1]
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."

Maybe those greased steel jacket bullets are the reason for the second barrel. I would keep it if I were you.

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01-06-2017, 07:14 PM	#30
kurusu User Join Date: Sep 2007 Posts: 1,225 Thanks: 2,679 Thanked 930 Times in 509 Posts	From wikipedia: "8mm Roth–Steyr 8mm Steyr - FMJ - 2.jpg 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" [1] 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." Maybe those greased steel jacket bullets are the reason for the second barrel. I would keep it if I were you.