One thing to look out for on shotguns is cast. Many of them have cast-off for right handers which moves the gun away from the eye for left handers. Can't say for others but that generally leaves me looking down or alongside the right hand side of the barrel. Don't have a clue how the Beretta is stocked but the only way to be sure is mount one and see.
Gunnery, gunnery, gunnery.
Hit the target, all else is twaddle!
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