You know, a Globco 555 (SVT) with the gas adjusted wrong COULD act like a straight-pull.
But the rumour-mill makes it sound more like a poor, maligned Ross.
SVT has a removable box mag and Globe did sell a bunch of them (Finn captures) in the original calibre. I have the very last one they had in stock, bought it in '76 when I was teaching on Fogo Island (most beautiful place in the whole world!).
I really wish we had the critter available; somebody would know in an instant.
Come to think on it, the French DID weld up the gas systems on a lot of their WW1 semi-autos, used them as straight-pulls in the Rif War and other nasty affairs. Some of these were sold off in the '60s.
But when importers who aren't gun people start looking to make money, anything can happen. We all have seen ads for "Swiss" rifles made by Carl Gustav, Portuguese rifles identified by the names of Romanian Kings, all that kind of thing. Likely there is still some poor guy out there looking for ammo for his 7.5x55 SWEDISH rifle...... taking his life in his hands (he thinks) when he fires 7.5x55 SWISS ammo from the thing. When I bought my first real rifle, it was an Italian Vetterli, converted from 10.35CF single-shot to 10.35CF Vitali-system box mag, converted to 6.5x52 MC with a Mannlicher magazine.... and it was advertised as being an Italian "sniper rifle" and as having a "spaghetti-grained stock". This was DEFINITELY the first time that I heard that spaghetti grew on trees. Something new all the time! Oh well, I got my money's worth ($11.97, FOB Peterborough) and I still have the critter.
But this one is intriguing; I really wish we had the rifle handy.
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