Yes they are. A cutting wheel on a grinder or dremel would be my choice, but a quality hacksaw blade made for hard steel ( not the one you inherited from your granddad that has all the teeth worn down.... ) and a quality mill bastard file should get the job done, even quicker if you can chuck the drill bit and spin it like a lathe.... a few drops of oil wouldn't hurt either.
Outlaw, if you are using a hand saw, you might want to check out the blade selectionw while your at Canadian Tire and get a fresh one suited for the job.