I've had no issues shooting full house "+P Barsness" handloads out of a carbine length 20.5" barrel CZ550 FS 9.3x62. If you have a personal preference for a longer sporter barrel, then so be it, but the carbine barrel is worthy in my book for such chambering in a compact/trim rifle. There must be a bazillion of these FS rifles floating around by now so that you should be able to find someone nearby for a test run.
Another good variation of that same CZ550 FS is the Carbine Kevlar below. Had I not been able to get the Sako carbine import, I probably would have gone the Carbine Kevlar route. I planned to shorten the Ruger barrel had I gone that direction.
http://www.cz-usa.com/products/view/550CarbineKevlar/Best
