My brother and I used to kill rattlesnakes with machetes back in the ‘60s when we were teenagers. Killed and skinned quite a few and once even ate one (tastes like chicken :)).
On one occasion back then I was out hunting rabbits with my Remington Nylon 66. It was a cold drizzly day with heavy overcast and as I was stalking a likely bush I stepped on a coiled rattler. I could feel the spongy feeling under my boot and stepped back and shot it in the head. Just then a rabbit broke from the bush and I pulled the trigger again hitting the rabbit in the neck. A rattlesnake and rabbit, all in one moment.
Lucky for me it was cold and the snake was sluggish or it would have gotten me for sure.
Stepping on a coiled rattlesnakes is definitely NOT!!! on my bucket list. The dead one I stepped over was scary enough. It was one big boy. Fortunately with flies buzzing around him.