I wasted 1 hour to load the Barnack Zorki and no success. I am done.

[Harry Stevens]

http://jay.fedka.com/index_files/Page345.htm

Taken from link.....

Properly loading a bottom-loading camera is a skill which isn’t quickly acquired. It might even seem impossible for people who have known nothing but auto-loading cameras which run on micromotors. But it isn’t difficult either. Practicing with a dead roll can give one the skill needed to load the FED properly. It is a skill learned through trying and using. After mastering the skill (it only takes a few rolls to do this), one could load a bottom-loader in less than a minute. In fact, it’s possible to load a camera in less than 30 secs. I’ve seen people do it. I’ve done it.

Link may help some.