I've known some of the best 3d shooters in the world. My opinion is that they are usually also the very best at shooting at game. To go through the stress of competion requires a meticulous, mental game. Most of them transfer that to shooting real deer too. I'm not talking about the millions of wannabees, I'm referring to top shooters. Then again, I've met a few really good shooters that have never shot at a deer...I'd bet they would fall apart. From personal experience, there is nothing better for your hunting accuracy than shooting 3D with complete strangers. You get to know folks from all over the country, and you learn to concentrate on putting your arrow where you want it under pressure. It isn't the same as a deer, but you will want to shoot well to the point of making it harder on yourself -like you would on a really good deer.