What caliber and year is a fna brescia 39 - XVI rifle?

Not enough information to answer- you PROBABLY have an Italian military rifle from the pre- WW 2 or WW 2 era- a Carcano. These were made in 3 different calibers. Brescia is the location of one of the plants that made them. Most common in 6.5 or 7.35 Carcano.