It's not the weight its the accurate shooter that bags the game
Couldn't have said it better myself!!! I'm very glad someone finally posted this. I've seen plenty of 40# bows take down large game. I am capable of shooting 50 - 55 pound bows myself. But, it's not always easy and I wouldn't even try it yet with an animal in front of me. I'm not ready for that yet.
Most important is you have to be able to draw your bow without unneeded movement. and you need to be able to hold it for a while.
You're right, this is key. Very important for people to realize that power isn't always the most important. I don't want power to become an issue for people here. I want people to realize that 40# is very capable for big game.