@ Mr Larrysmith - Let's put it THIS way - which bullet would YOU rather be at the wrong end of?
1. A 155gr .308 Win at 2650 fps - m/e 2417 ft lbs.
2. A 174gr 7.5x55 at 2650 fps - m/e 2713 ft lbs.
1.2 TONS of muzzle energy impresses the heck out of THIS boy.
Some of us here would be really interested to hear what your opinion is based on, seeing as it can't be simple ballistics.
As Diopter notes, the 7.5x55 cartridge is most of the way toward a .30-06, rather than a slightly different .308Win/7.62x51 NATO. AFAIK, nobody has ever complained about the .30-06 cartridge as 'a joke'. Ask all those Japanese and Germans and Koreans etc...
Just because the Swiss round never actually went to war, does not mean that it's 'a joke'. That thing is sure going to leave a mark, IMO. You might be interested to know that it was initially developed right alongside the original .303 British cartridge, with a similar volume case and similar 200gr PP bullet and compressed BP charge. The Swiss, however, went for the world's first jacketed bullet instead with the GP90 cartridge. The Swiss gentleman who had a big hand in designing BOTH cartridges was none other than Colonel Eduard Rubin, of Schmidt-Rubin fame - on a sabbatical at the Enfield Lock arsenal. For reasons best known to themselves, the British stuck with a rimmed cartridge, and the Swiss, and just about everybody else [except the Russians], went for a rimless case. This had long-term repercussions in the design of machine guns, of course, although that might be a subject for another time, if you've read this far, of course.
tac
www.swissrifles.com