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.


For all C.O.S.C members and guests:

You are responsible for your own safety and prevention of the spread of the Covid-19 virus. Therefore, all club and range rules still apply with the temporary additions of:
-Please do not touch anything that you do not have to.
-Please sanitize everything you touch to include wood and metal objects like the range benches and gate lock.
-Please maintain your 6’ social distancing, even with shared household members, or we will be getting calls on it, forcing us to send people out to check on it.

Club Hours:  9:00 am to 1/2 hour before sunset, but not past 9:00 pm, so please pay attention to the time of sunset.

Range Rules:  All members need to be familiar with the Range Rules

In the upkeep of the club, the board of directors has decided to place  a cap of 600 members. We will no longer be accepting new member applications at this time. Also we will no longer be taking walk-ins off the street, you will have to be sponsored by a member in good standing.

  • Non-members use of the COSC facilities is strictly prohibited.
  • Members found using the ranges or facilities in a destructive manner may be subject to revocation of membership.

Club News

  • See the August 2021 newsletter for upcoming club activities. Be advised, activities are subject to cancellation due to public health advisories from the State of Michigan or severe weather.
  • COSC Gun Show – Antique and Modern
    Sunday, Sept. 26, 2021  Public hours: 9:00 am – 3:00 pm
    Admission: $3.00 per person.    Table reservation: $15.00 per table.
    Contact John Gambill for more info: 517-646-0681.
  • With Spring/Summer stormy weather, call the person who is leading the shoot discipline to see if activities have been delayed or cancelled. Their names and numbers are on the CONTACT US page.
  • Firearms training – See the current newsletter on how to register.