I patterned my ruger 5.5 inch barrel 44 mag sort of like a shotgun.
Up to 8-10 foot is tight enough to make killing most things ok. When I drop it out to 30+ foot it does not always remove bark off a dead tree in one area. It is garbage can lid size and a minor deterrant while I cycle to what I should have been shooting for a round.
Each gun is a bit different, shot size, who made it, and what not change things. I settled on cci basic 44 special shot rounds and it does what I need fine. But a shotgun it is not and I have taken to not carrying the 44 mag lately anyway.
Within a few feet it makes nice holes either because it is that tightly together with or without the plastic shot holder, or who knows what.
But pattern it like a shotgun. CCI out of my 357 mag revolvers is sort of similar, but not really if you start messing with every 5 feet till you lose pattern and then bring targets in to find out where it gets unacceptable.