I had a 550 in 6.5x55 I had CZ rebarrel to 9.3x62.

I chopped the stock, rasped a hog's back comb on it, removed the cheekpiece {I'm a southpaw}, and had CZ lop the 9.3 barrel to 19 inches. Then I mounted a side-sling-swivel affair for double shoulder "Biathlon" carry.

I like the 19 inch barrel. I get full-and-more 9.3x57 long-barrel velocities, which is no insult. I like it. Handles very well with old Burris 3x9 scoipe mounted in Warne QD rings or with the open sights.

The barrel is merely a standard 550 9.3x62 tube, chopped, with the Mannlicher carbine sights installed, making it pretty stiff for a stubby.