Welcome to Chief Okemos Sportsman’s Club!

COSC is a family-friendly gun and archery club in Dimondale, Michigan, located about 15 minutes west of Lansing.


To promote the safe and responsible use of firearms and archery activities in the Mid-Michigan area

C.O.S.C. Pledge

I give my pledge as an American to save and faithfully defend from waste the natural resources of my country, its air, soil, and materials, its forests, waters and wildlife.


Join or Renew your COSC Membership

 Club News

  • With shooting sports all underway, please call the shooting discipline leader to ask if shooting will still be going on if the weather is questionable.
  • Please see the club newsletter on this site for our July 2017 news and updates on upcoming club activities
  • Shooting sports are back into action. Please visit our Shooting Sports page to find shooting discipline info.
  • Ladies, Ladies Ladies shooting season is underway but you can still join us to learn more about our ladies only program and learn to shoot with women NRA instructors.
  • Cowboys and Cowgirls can get their Cowboy Action Shooting on by visiting the club and meeting up with our resident cowboys. See the club calendar for dates.
  • Clubhouse Rental information can be found on our Clubhouse page.
  • Please visit the Join or Renew your COSC Membership link, above.
  • Club By-Laws – If you wish to review the newly revised by-laws, review this pdf.
  • Is your home address up-to-date with our Membership Committee? If not, please let us know.