The authors indicate on page 300 that .264 bullets are ok in some rifles but inaccurate in others. They indicate that only the Hornaday .264 bullets with 160 grain round nose work with reasonable results see page 298. They also indicate that the .264 spitzer pointed bullet is inaccurate, but do not mention what ammo has these as factory production? The state the best results are with Hornady special produced bullet in .2675 that came out in 2002. Not sure if this is the bad bullet design Slowbob is talking about?
They also mention Norma ammo is good, but state the extraction groove is too narrow and causes problems. At $45 a box that is nuts. And its .264 too boot, very bad! Prvi cases have corrected the extraction groove problem. The authors also state that the Hornady .2675 160 grain RN bullets are " an exact copy of the profile of the original 162-grain FMJ bullet." pp. 298-299. Then on page 299 they go into specific powders can cause the bullet to stop in the bore. This is really nuts. See the book for the two powders the authors recommend. They are new stuff I never heard of H414 and WC760?? I just want to buy a box of correct factory ammo that is safe to use and can fire like a normal rifle. As indicated Prvi must be .264 because the bullet tumbles down the range with side hits or misses with the target at 75 yards. I basically do not shoot my 5 Cavalry carbines because they do not hit anything with Prvi ammo. I like there looks and feel, but as shooters I will take any other rifle. Sort of put these in a junk rifle category like Spanish made Mausers.
Maybe I got to use prvi cases and Slowbobs lead bullets. But what brand mold or place sells it, and what is the mold number to make or buy these lead bullets. Who has them. There appears to be a wide variation in groove diameters in Carcanos. I wonder if I can use IMR 3031 in a 6.5? I can not find the lead bullet link

reloading for a Carcano seems to be a dangerous adventure: http://forums.gunboards.com/showthread. ... mm-Carcano
This chart at least provides bullet size
http://personal.stevens.edu/~gliberat/c ... _data.html