You asked where I was getting the info from... that would be from US shooters reporting their results on their youtube channels. Some are showing some very impressive results way out there.
wrt to Cdn supply... well, that is a can of worms. Maybe some in Can now???
unfortunately, my experience with Xact was very poor. For the small fortune to get the last bricks to me, it shot with far more flyers then the grade and cost would suggest. If the answer is 'bad lot', then it makes the venture for more even less exciting.
I am resigned that rimfire is and will continue to be a game of luck fueled by way too much money and time. For my end uses, CX (hopefully, good lot) will serve my needs as the difference between 1 or 3 fliers is not worth that much money... and my Xact had way more then 1 flyer
If I am going to invest a bucket load of money, I will move to air rifles where I have a far better chance of controlling my outcome...and the LR results have been nicely demonstrated to be no worst (and likely, a whole lot better) then rimfire.
Jerry