I have had one for years but have never shot it a whole lot. In terms of power and velocity, it is close to the .35 Remington. I have a carbine and the recoil is noticeable because of the metal buttplate. Like most military rifles, it shoots about 16 inches high at 100 yards. As for re-barreling it, the German Wehrmacht re-barreled them for the 7.9x57 round, and I believe they issued them to second line troops. Lining the bore to a smaller caliber would seem to me to be the most practical way to re-chamber it, and that would preserve any markings. I have recently seen M-91/30's for under $60, so you would have to find someone who would work really cheaply, or do the job yourself. Hornady makes ammo for the 8x56 and Lee makes both reloading dies and bullet moulds.