7.5 Swiss is for sure a real cartridge.. The Swiss have been using it since the late 1800's. The rifles are most likely Swiss straight pull M1896? Don't remember the numbers for certain but remember the first was a 1891... In any case they've been importing a fair number of these into the country for the last several months.. They are extremely well built rifles and the straight pull action works like a charm. they are a bit heavy and long to handle but shoot quite well. Mounting a scope is a royal pain but can be done. Williams makes a side mount with a built in adjustment. They take a bit of getting used to but work well. The guy I put the last one on for had bought the rifle at a rumage sale built into a lamp! I found him a magazine and put a scope on it for him and he called back to tell me how well it shot.. better than a cheaap Remington he'd gotten at the local Wallyworld.. Ammo is not overly pentiful and I believe Norma is the only outfit loading it now...and probably no one else will.. Too few rifles that are very resistant to change.. I'd buy one, in good condition, to keep as a military collectable but not as a shooter..