They are low recoil and tend to be very accurate.
The Swedes took fanatical care of them, so it's not unusual to find them in very good condition--and the bores are always bright.
They were made in three basic variants, the model 94 which is a carbine and quite rare, the model 96 which has a straight bolt & 29" barrel and the model 38 which has a bent bolt & 25" barrel. Then there are the typical transition variants which have a straight bolt but the shorter barrel.
The model 96 rifles lowest sight setting is 300 meters--that means that they will shoot about 11" high at 100 yards unless you put a high front sight on them. The Model 38 rifles have the "T" marked rear sight which has settings down to 100 meters.
The rifles were manufactured originally in Oberndorf and then as Swedish demand picked up, some were made in Sweden at the Husqvarna and Carl Gustaf factories.
Many of the rifles have threaded muzzles--for blank firing devices. The Swedes used blanks with wooden bullets for training. The BFD would shred the wooden bullets.
The 6.5x55 Swede is virtually identical in performance to the .260 Remington. The .260 is really a 6.5-08.
Although never very common in the U.S. the 6.5x55 is quite popular in Europe--almost the equivalent of what the .308 is to us.
The round is very effective on game--one of the rounds that truly dishes out far more hunting performance than its paper ballistics would suggest.