having been heavily involved in the 3 Gun matches in Kamloops I agree with all the statements made. It is extremely labour intensive to set up and tear down. The same people seem to be the ones doing it all the time and they will/did get burned out. That was why there were no matches this year. The last match Kamloops held had a very small turnout and only 3 people did the set up and tear down. Kind of soured them for a while.
As to the mag restrictions in Kamloops it is simply stating Canadian law. At the time those were written there were no Beo wolf mags. The rules haven't been updated.
The comment about having to change mags and actually run your gun is very true and has a hidden use. To build a stage that uses all 3 firearms and has a mag change for a 30 round mag, 10+ round shotgun and 15+ round pistol is huge. The 3 gun nation matches must have a huge amount of volunteers to reset. It may be a ton of fun to shoot, but you have to think about how long it takes to score the stage, reset and run 20-40 people through the stage in a day. And if you have 6 stages like this you better have a lot of volunteers and multiple days to run the match. Canadian mag restrictions are annoying but they make you more proficient with all your firearms skills, especially reloading.
I always had a formula for a 6 stage match. Total round count of 200 rounds combine for all three guns. That way I could get 30 people through in one day. More people or more rounds and you were pushing a 12 hour day.
I am no expert on organizing matches, but after running 2 3gun matches a year for 4 years I think I have some insight. I am willing to travel and went to Lone Butte and Abbotsford's match's and really enjoyed them. I would love to see more matches as well, but as someone else said, Canadian laws scare away more people than we can attract to the sport.
Just my opinion