16 Lb. Official Iron Shot From Olympia Sports. Shot Competition Specs Women from High School through age 49 4.0 kilo. Women age 50 plus 3.0 kilo. Boys High School 12 lbs. Men to age 49 16 lbs. Men 50-59 6.0 kilo. Men 60-69 5.0 kilo. Men 70 plus 4.0 kilo.