We had the chance to dig into a Roth Steyr 1907 selfloading pistol recently, and put together a video on it. The pistol is quite unusual, with a fixed internal magazine, rotating barrel locking system, and quasi-double action trigger mechanism (actually quite similar to modern striker-fire pistol trigger mechanisms). Have a look:

The successor to the 1907 was the Steyr 1912 (aka Steyr-Hahn), which shares its rotating barrel system, but uses a conventional hammer-fired trigger mechanism. Other rotating-barrel pistols have been tried, but none of them have been particularly successful.


  1. Interesting similarity of the firing pin to that of the firing pin in the Type 14 Nambu, although the Steyr one is much more robust.

  2. When you demonstrate the trigger mechanism, there’s a “middle” cam that is moved by the trigger but does not seem to be involved in firing. Any idea what it’s for, safety catch maybe?

  3. Hi, nice Video and great explanation of the working principle, but i hoped to hear more of the history additionaly.

  4. you failed to mention how rare 8mmRS is and how owners of the gun cam wildcat their own; Last batch of 8mm RS was made by Fiochi in the 1970s and own a precious box with 42 still in it but,,, I shoot ones I roll my own: The rounds you can use to make 8mmRS are: 32 H&R Magnum (if you have the machine shop to trim off the rim), 30 Carbine , or 2 other rounds but you don’t WANT to use those: 32 French Long (rare) or 30 Pedersen (VERY rare) I make mine with 30 carbine necked to length then fire formed using a 0-0 buck (same .320 size as the actual bullet, then once fireformed I use 8mm Nambu bullets to reload. I use loading data for the 32ACP which produces a mild shot that does cycle the slide.
    Just thought others might like to know

  5. Excellent video, and very informative. I really liked the demonstration of the firing process. I have a 1907 that seems hopelessly stuck. The bolt will not move more than a sixteenth of an inch. Barrel can be removed as you show. Side panel is of course held in place by the recoil spring and plunger. I believe something in the magazine may have broken and prevents the bolt from sliding. Any ideas on how I might get the bolt freed up?

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