The discussion on the Beretta side lever gun got me thinking that most of folks have never used a side lever gun. I have a pair of Charles Boswell side lever BLEs. I use them.
Here is what I have learned.
If you are a right hander, you usually carry the gun on your right shoulder. A side lever that opens on the left, will jab you in the neck when carried. It hurts.
If you shoot the guns as a pair with a loader, the right side lever is faster for the loader. When the loader gets the gun, as he leans right to load the empty gun, his thumb opens the gun putting his hand directly above the ammo bag for faster reloading. It becomes a fluid motion for the loader.
Joe in Charlotte