For the initial sighting or re-sighting a .300 WM on the range, it's going to hurt a little afterward. But I've found that for checking with less than 10 rounds a year it's not a big deal.

And when I'm shooting mine at an Elk, I don't remember the .300 WM hurting. I don't even remember the kick. All I see it the animal when the slug hits and if it's hit well it stops for a quick follow-up shot or it's down on the ground.