Work on your geography and map reading skills, the lot in front of Dicks is in no way shape or form in MA at any point.
I'm as irked by some of the things police do any get away with as anybody but you are off base with the bold. I think the more weak minded here like to throw in these little shots at the cops with no basis because they think its the conventional wisdom here or the way to endear themselves to the forum. It is easily lost on people that the majority of cops don't give a shit about the fact that you are lawfully armed and in fact 100% support the idea. I criticize the profession quite a bit and I've actually spent some sworn time in it as well before the .mil. It amazes me that you could actually think that the Tyngsboro cops are sitting someplace with binoculars just trying to jam up some unknowing NH citizen who wonders into MA temporarily with guns or ammo. "Oh yea Sarge, we watched for this guy to place one wheel on the MA line knowing he had just walked out of Dicks with Ammo and pounced, where is our medal?". Bullshit. The Sgt and/or LT would be pissed that they were woken up or dragged out of the gym, off facebook or away from the game and now have to do a bunch of work for such BS. They would likely send the arrested home and play it off as a "mistake" if they even had cops on the street who were dumb enough to waste their own time and the towns resources on such BS.
In the other case citied, it is easily ignored that there are other things going on besides the firearm issue. That does not make the firearm charges any less than unconstitutional BS as always but once the cops get involved certain things usually necessarily follow when law violations are found. No I dont agree with that.
Still, its troublesome that
1) People actually worry about this crap
2) People think the cops are just rubbing their hands together looking to jam people up. They are not generally anti 2A, not by a long shot. Statists in alot of cases, yes. Against your right to own and carry a gun? Not at all, generally speaking.
To entertain your question about leniency, yes, I think you would not have a problem if, in the exact situation you describe, you wandered unknowing into MA within a confined parking lot and happened to get caught. They would tell you to get out of their sight and don't do it again. They don't consider jamming up otherwise law abiding people their idea of fun. Cops are generally after scumbags who we would also hate and all players in the drug trade which alot of us, myself included, do not often agree with absent other, more severe crime. If said people also happen to also be possessing firearms illegally, they will be happy to throw the book at them but this whole looking for NRA, Goal and NES stickers or people walking out of the gun shop to jam up is complete fantasy and shows your lack of any real life experience if you post that kind of shit here. Where do you think you can find the cops when they are not working? Buying ammo, buying guns, driving cars with NRA stickers, etc.