JMHO but:   I don't believe there is anything in the ASSRA rules that forbids 1-piece stocks as long as it meets the other requirements. ( Although If I wanted to win many center-fire bench-shooting matches at Etna Green I might be lobbying for such  )  Other single shot groups may have their own take on it.

As you can see from the final line of the rule you quoted; while "The Founders" were more interested in the traditional Euro-American-style single shot rifles. They specifically did not rule OUT the International Free Rifle-type rifles based on stock design as long as they met the other requirements--single shot, shooting plain-based lead bullets etc.  (And even that I suspect was more of an aesthetic reaction to the shiny aluminum adjustable butt-hooks that anything more substantive)

While they don't have the lines of the rifles many of us think of as traditional single shots; if I remember correctly that type of stock is original with that rifle and others of that era in Germany.
  The ONLY area I can see where you might get some quibbling might be IF you were to enter your scores in the traditional class (w/ era appropriate sights) and even that is a matter of self-identification and local interpretation. 
Looks like a really nice legal rifle to me.  But to be certain consult your own local schuetzenmeister since he interprets the rules at your range
Shoot it well and with pleasure.

I agree that one piece stocks are OK. I wouldn't have built my Trapdoor Scheutzen if I had thought different.

Well I moved to Wichita Ks. in the last year and I have not been able to find a schuetzen club to shoot with here. I was interested in the "A 21st Century Match" 40 Rod posted about but in the posting it reads

Quote:


As for the sites, I have the oiginal "iron" sites it came with and can shoot well with them. I was just wanting to make sure I was legal.