With a .357 Magnum at deer-sized animals, 100 yards is not close range. It is not intermediate range. It is not merely long range.
It is a stunt.
Keep them at a range that you can
reliably, from field position, put an entire cylinderful into a paper plate. If you can do that at 100 yards with field sights and a heavy bullet deerkilling load and from a somewhat unknown distance...
You're a better shot than me. And I'm good.