I want to mount a Burris FF 3 on my 20 gage Benelli Cordoba and I'm looking for suggestions and recommendations.

Has anyone used the Burris SpeedBead and what do you think about it?

My FF came with Picatinny / Weaver mount. One option would be adapting a Weaver base to the top of the receiver but I'm thinking that would that place the FF too high.

The last option would be milling the top of the receiver. I'd prefer not to do that but I would consider it if that turns out to be the best option.

I do use the gun for clays and waterfowl so removing the sight would be necessary.

Suggestions?

Options?