Also, I'm wondering if you're just not used to the "cock-on-open" way the Carcano functions.
If you're used to Lee Enfields and K98k's (although the K98k is cock on open as well), a Carcano can seem like it takes a lot of effort to bolt. Especially when opening the bolt after firing... It takes a bit of getting used to, but once you know the required wrist action you'll get a lot quicker with it.