jlwilliams I'm of the same line of thinking. Always have been.
I've seen a couple of things like that desribed for holding shells but I was wondering more of a sequence of actions best suited to get the round in etc.
Sorry about that I should learn to explain meself a bit more proper.
Ie: let the recoil /muzzle blast keep letting the muzzle up maybe , without correcting it.
let the left thumb push the lever and let the stock hinge downward and letting the barrel drop. letting the shell fall out.
The left hand keeps swinging going down plucking a round out on the way up and placing it into chamber.
Rolling the barrell down and the action up while cocking the action and closing the breech.
Pushing the gun back forward and up to repoint on target.
Something like that maybe!!!
Sortta maybe handi if a make a big 'ol boar a bit more peeved off more than dead enough straight up.
(bit slow on me 'ol pins now and can't scatter or shimmy up a tree like a startled cazell these days

)
If I for unforseen circumstances I miss place the initial shot.
Or the bullet doesn't funtion for some reason like it should. (sunbaked mud etc)

Not that i'd miss mind!!!
But has been known to happen from time to time.And I usually miss well when I do but.
Barra