April;
The Military runs Vokes range and as such, each year the BCRA and Military representative come to agreement on dates of availability for the BCRA which are still subject to possible cancellation. Of those dates assigned to the BCRA, some are designated for an introductory day, several practice matches but the bulk assigned for various provincial championships (BC service rifle, BC Precision, BC TR and F-Class and the like.) You cannot just show up at Vokes and hope to shoot....it doesn't work like that.
If you would like access to Vokes Range then I suggest that you join the BCRA. In the spring, they will then send you a schedule of the various matches, practices and the like for the upcoming year.
Hope this helps, Brian