RE: turkey gun for a 13 year old?
Do you have an adult to take you to store, teach shooting, and safety? Some clubs have youth programs.
Be certain you have the proper training and follow the safety rules....Most states require a hunter safety course, if your doesn't it is still recommend.
Handling a gun is an adult responsibility, seek assistance from an experienced adult individual...Be safe and Have fun. Hunting can provide many years of fun and challenges....
I would suggest a 20 gauge, full choke, single shot, used shotgun in youth model size, if you are average size for a 13 year old.
20 ga. doesn't kick much.
full choke is needed for turkey.
single shot will make you learn to take only good shots
and a youth model so the length of pull is correct and you can quickly and safely shoulder the gun.
A used gun because it is less money and you will soon grow out of it.
Be safe....