OSA MOS Practice - 26 July 2026

"MOS" shooter-spotter practice... deliberates, moving targets, and snaps.
OSA members, affiliates and guests are welcome to participate in the "MOS" (MilCun Operational Sniper) practice sessions at the MilCun Training Center. You must be qualified to shoot to 600 meters at the MilCun Training Center.
The practices are based on the precision/sniper rifle matches. They are fired in shooter-spotter pairs. The matches include deliberates (at 100 and 600 meters), snaps (at 200, 300, and 500 meters), and movers (at 200 and 400 meters). You can download the course of fire from the osacanada.ca website (at the bottom of the Events page).
Ammunition must be proven safe in your rifle; you must have previously fired at least 50 rounds of this load in this rifle. If the ammo shows any signs of excess pressure, you must withdraw. You'll probably need about 100 rounds for the day, but it's best to bring double.
Working electronic ear defenders and safety glasses are mandatory. One spotting scope per pair is required.
$75.00 for non-members. $25.00 off for OSA members, $25.00 off for OSA affiliate members. If you're under 18, register as a junior. OSA Volunteers who want to claim their discount on this event, please email me.
Check in at the 100m range at 0830. You may be asked for proof of club membership.
Mandatory safety briefing starts at 0845. If you are not present for the safety briefing, you will not be able to participate.
If you haven't been to an OSA event before, email [email protected] for detailed instructions. You must have shooter's liability insurance to enter our facility; i.e., you must be a member of the CSSA, CCFR, NFA, or similar. You must be fluent in English to participate in any OSA event.
Note that we no longer allow photographs to be taken on MilCun property.