So, you might be wondering why it’s important to stand a certain way or hold your gun a certain way when you are playing paintball. Well it’s not about doing it the right way or the wrong way. It’s all about consistency, accuracy, and concealment. There are a few other things that need to be considered as well like muscle fatigue, range of movement and response times.
A proper shooting stance will benefit you most greatly in your consistency, accuracy and concealment.

Consistency:

When choosing a shooting stance that is comfortable for you, you’ll want to choose one that flows semi-naturally(or practice it enough so it becomes natural). You’ll want to be able to go back to the same shooting stance every time. Why? Because, when you’re going into your shooting stance you want to know for sure that you can fire and hit your mark with the same consistency every time. If you don’t practice popping in and out of your shooting stance, chances are, your shots are going to be all over the place. It takes a while to get a feel for it, but once you get a good, solid, consistent shooting stance going you’ll be able to hit your target consistently without even thinking about it.

Accuracy:

I feel like I’ve alreay gone over the accuracy part having talked about consistency BUT the difference between the two is being able to adjust your shooting platform to your surroundings to give you more accurate shots.

Concealment:

This is a biggie. When you’re playing paintball you want to keep as much of your body behind cover as possible. You want to offer your opponent as little of a target as possible, so when you’re trying to get a feel for your shooting stance make sure you keep your limbs tucked in and out of the way.
You’ll want to practice 3 different shooting positions:

  • Standing – Standing up.
  • Kneeling – Kneeling on the ground.
  • Prone – Laying down.

The same rules apply to all three of those positions.

Muscle fatigue

You’ll want to work out a shooting stance that won’t stress your muscles out too quickly. You may have to be in that stance for 10-20 minutes or depending on what role you’re playing 30 minutes to an hour. Some ways to reduce muscle fatigue or cheat are:

 "Bone on bone" - Which means to rest your elbows on your knee or other "Bones" while kneeling

Lean against a tree or rock…really anything that will safely support your weight. This isn’t a “proper” technique though and I wouldn’t suggest it because you should be at ready 24/7 and it is kind of akward to start going or whip around when you are putting your weight on something else.
Another tip is to keep your weight evenly distributed. Don’t put all your weight on one foot or leg. If you put a hand down to stablize your self don’t rest all of your weight on it. Stuff like that.

Range of movement

When working on your shooting stances, remember, don’t limit your range of motion. You want to be able to move quickly, whip around, run or dive for cover, or react quickly without being hindered by your stance. You don’t want to be caught off gaurd and trip over your own feet while trying to react.
One last thing to think about is keeping your gun at ready. That means keeping your stock planted on your shoulder and your gun drawn so that it’s pointed at whatever you’re looking at. This is especially important when you’re running point or trying to flush out a sniper. If you come up on a guy and it’s a surprise to you both it could mean the difference between making the shot or getting shot.
Some things to remember:

  • Be consistent and practice your stances
  • Keep your limbs tucked in(especially your shoulders, they tend to flare out when you’re shooting).