I love the 25 Bullberry. It would be my first choice for short to medium range deer. Not sure of velocities, don't have a chronographer.
Yes those are rifle scopes. I shoot them on all my smaller calibers. I love to be able to see the dum-dums (my favorite nonliving target) explode. As I get older it makes it a lot easier to see the long rangfe stuff. Takes a little getting used to but I wouldn't go back for anything. A lot of shooters use rifle scopes on their long range BRAKED big bores.
Safe shooting
Doug