I tried it with my lone ejector gun, a new-to-me Browning Sidelock BSS, and need both hands to get the old girl open. Seems like the sweet spot to get the gun open and cocked and the ejectors not activated is a small enough area that it would take some practice for me to pull it off. The corners on the bottom of the gun are kinda sharp and pokey, too, still getting used to that.
Now, Darne ejectors, I’ve got them down.
I must emphasize, I really like the Browning, and my score at “rub my chin low gun skeet” is as high as it has ever been. I swore off side locks after a horrific experience with a pre-Royal Holland with a single trigger, about 25 years ago, but, this one seems to be like a low maintenance girlfriend you just can’t get enough of.
I bet you’d be a natural at CAS, Stan.

Best,
Ted