To answer your questions ....
No, we have yet to experience such a road block or an actual visit on range property.
In the past, when Bill C-68 was being dictated to us, gun owners organized a couple of rallies on Parliament Hill - "Fed Up" and "Fed Up 2". These attracted an estimated 10,000 - 18,000 protestors.
Considering that we are currently a nation of 33 million (the population of California), that was quite a representation. It accomplished nothing as the ruling Liberal party had a lock on majorities in both the House of Commons and the Senate. We were told - "The debate is over." There was no debate, other than to ram it through the required reading in the House.
Protestors were video taped and those that gave the RCMP the finger paid a price for it - or so they said. What really offended people was the visibility of snipers in positions of advantage. It came as a shock that our gov't would actually consider shooting down citizens in a lawful protest.
Before you get too smug about it, I understand that Obama has decreed that henceforth no lawful assembly may take place outside the Whitehouse when controversial issues are being debated in the House. And if you think that you still have the right of 'habeas corpus', think again .....
The fact is, every anti-gun initiative can trace it's roots back to the US 1934 National Firearms Act, the 1968 Gun Control Act and several other initiatives between and up to the present. The GCA actually was intended to ban handguns, but it would have caused too much of a problem, so it was dropped. Remember the Volstead Act that brought in Prohibition? Any gov't with the balls to do that was capable of anything.
Canadians were required to register their handguns in 1934. Bans and prohibitions came much later in our era. Our salient national characteristic is acquiescence, so compliance was assured. We were told that it was for the greater good and if we were doing nothing wrong, we had nothing to worry about.
Forgotten was the lesson of history that wherever and whenever registration of guns and owners has taken place, confiscation was the end result. At the same time as the 1934 GCA and our handgun registration was taking place, Hitler was hard at it and we know the result of that - he knew who had what and Jews were banned from owning guns altogether. Unarmed people cannot resist a standing army.
You will notice the reluctance of Canadians that read this section of the forum to comment. Many believe that gun sites are being monitored by 'Big Brother', and they are. Just recently, Bill C-30 was drafted, allegedly to protect children from internet predators.
In reality, it would give the gov't the power to monitor all internet transmissions, email, etc. and ultimately block out what they don't want us to know.
This has the civil libertarians up in arms over the invasion of privacy. Since they didn't give a damn when it was happening to gun owners, I say - 'Tough! It's for the greater good, and if you aren't doing anything wrong, you have nothing to worry about.'
Registration of gun and owners, bans, prohibitions of certain calibres, barrel lengths, massive public surveillance, internet censorship - right out of George Orwell's '1984' and "Unintended Consequences" by John Ross. If you haven't read both, do so. You'll understand things a whole lot better. Or you can bury your head in the sand and pretend that none of this is really happening.
We live in a country where the 'Thought Police' arrest you, take you to the station, strip search you and ransack your house because your four year old daughter drew a picture on the whiteboard of her Daddy "shooting monsters and bad guys". Sounds like a 'B' movie plot, doesn't it, but it just happened.
BTW - the picture doesn't exist as the teacher erased it lest it poison the minds of the moppets under her care. The gun in question was a $15 toy that shoots foam darts. The man doesn't own any real guns, as the cops knew if they checked our soon-to-be-scrapped Firearms Registry.
There was no parent/teacher interview, no phone calls, just the raid. If this doesn't say 'police state' to you, then I don't understand the term. The father has retained a lawyer and it is hoped that he will NOT settle out of court, but make this a precedent setting event.
Ironically,this took place in a city once known as 'Berlin' due to the high number of German settlers. It was changed during WW I.
Since the above was 'Gestapo' tactics, it might be appropriate to revert to the original name.
Ross was prevented from bringing copies of his book into Canada by YOUR people, not ours. He was warned not to publish under his own name for fear of reprisal from the BATF. Read the book; you'll understand why it's hard to find, even though it had four printings. Copies on the net go for over $200, but it is available to download as a pdf file. You can get a copy of '1984' from the library.