Hi Phil
You might also look at the weight of the FFT steel handle vs stock OEM handle. Benelli made the system to cycle the action with the stock handle, as you add weight, I imagine that to some degree you will be slowing down the action.
I believe someone posted observations of action slowing with an aftermarket handle. It might have been StrangerDanger but I'm not sure.
Whether slowing the action would translate to reliability issues or not I don't know. (perhaps when combined with a dirty action etc?) Anyway Phil I just thought I'd throw this stuff out there for your consideration
Later,
Hookster