.30 cal tracer heads (.308) in packs of 100 140gr - they will ignite around 100m from the muzzle of the gun for best results use a large grain powder to ignite them towards the max load for this weight of head light loads may fail to ignite them.. These will fit any 30 cal rifle ie 308 ,30-06 anything taking a .308 bullet
 
These are of new manufacture not pulled from old rounds  !