im 13 years of age. i have wanted to be a marine sniper for.... well since i grew up past the stage of wanting to be a cop. i shoot small caliber weapons... .22.,, 2.43.,, 2.23,, etc.. .50 caliber. yes .50 is a big gun. it is black powder though. however my friend has .50 caliber sniper rifles that i intend on shooting soon. Im naturally a good shot. im good at math. i have my own ghille suit. i could go on and on about what i do and shoot and have. however i need help with requirements, and other expectations and tips that would help me become a good sniper. i understand mil dot scopes also. if someone could help me, preferably former snipers, or anyone that has a clue what there talking about. that would be very helpful. thnx.