I made it part of my routine to exercise the shutters of my Hasselblad lenses once or twice a year, a few times at several speeds, keeping the lubricants from freezing up. That is quite a job every time, and I'm not looking forward to it. But this time, I found a way to make it easier. I mount the Hasselblad bellows on the table, attach each lens to it, and use it as a replacement f a Hasselblad body. Now, I can use the bellows to cock the shutter, release the shutter with a cabel release, and move on to the next lens without having to mount each lens to a body or having to remove the back's insert whenever the frame counter reaches the end. I also reduces the risk of dropping the lens. Just don't forget to cock the lens before detaching it from the bellows. thought I'd share.
