I have one in a Steyr ProHunter. Very accurate rifle, sub MOA with loads it likes. Better to get the correct brass, the 257,7X57, etc brass has a different shoulder and will not work without fire forming by just necking up or down. Brass is available, I use RWS brass and it is outstanding. Huntington's normally stocks it. It is expensive, but lasts a long time and is very consistent. Performance wise one can get about 50 to 100fps more than the 6.5X55, it holds a couple more grains of powder. Same bullet weights etc as the Swede. It is a Long Action cartridge. The 260 pretty much taps out at 130g bullets. The 6.5X57 can use the full range all the way to 165g (original Barnes bullets) In my deer load I use 130g Accubonds. Not a big kicker, several first year hunters have used this rifle successfully. The Steyr has removable spacers on the butt plate. Easy to get it right for the young ones. With correct bullets, I would not hesitate to use the 6.5X57 for Elk or Moose.