[Mariner]

"Maybe, it’s been suggested, because they were fighting over the gun and Zimmerman’s hand blocked the reloading."

This is the only plausible explanation.

The pistol was physically constrained from cycling properly.

[MtBaldy]

“”Maybe, it’s been suggested, because they were fighting over the gun and Zimmerman’s hand blocked the reloading.”

This is the only plausible explanation.”

No, the more likely explanation is Martin had a hold on the gun trying to take it from Zimmerman when Zimmerman fired.