Choosing a shotgun for competition is a process that only you can make the final decision on. It takes small tweaks and adjustments to fit a shotgun to your face, eyesight, and grip before you’re ready to compete. You should also enjoy the shotgun you’re shooting and be able to manage the recoil.
The variety of shotguns on the market can make it overwhelming to choose just one. As always, I recommend finding a range that rents guns to try before you buy. You can always ask a friend or visit a local gun shop that will let you rack the gun and get a feel for it.