Weaver makes a no-drill scope mount for the blackhawk. It isn't cheap, but I had one on my .41 blackhawk and it worked fine. I think there are some others who make mounts that are no-drill as well, but I'm not sure who they are. The only thing I didn't like about a scope on the blackhawk is that it made the thing way too bulky, but I used it for NRA Pistol Silhouette so I needed the scope. If you go with the larger calibers like .41 mag., .44 mag. or heavy .45 Colt loads be sure to get a quality scope. I first had a Tasco on my .41 mag. and it self-destructed in about 50 rounds.