Originally Posted by Danke
You better start by checking local bylaws to see if that's allowed within the city.
I agree with Danke. Local bylaws will likely be the biggest obstacle. There'd likely have to be some special zoning for that unless the location in question is already zoned to allow some sort of firearms range.
Nanaimo's Firearms Discharge Bylaw
There was a recent attempt to open one in Richmond that initially fell on it's face due to similar bylaw issues. Despite their rather cold initial reaction, the local council and city staff now seem to working with the applicants to look at more appropriate locations.
The most notable sentiment from Richmond council was that they didn't want this sort of facility in the middle of town. However, they seemed much more receptive to one in an outlying industrial area.
Good luck on your endeavor!