This link is a step by step insruction guide to remove the magazine. It came in handy for me when I wanted to replace the breech seal.Sorry every one the link didn't work. Trying to resolve the problem.
Sorry everone, Could not set up a link. However a call to Gammo USA (479-636-1200 ) and request instructions by email. That worked for me.
With the pellet loader removed it loads like a regular single shot springer. Here is a UTube link for disassembly of the magazine. This may help with the O ring problem.