Welcome to CGN. Your top choices for Canadian made barrels are from Ted Gaillard and Ron Smith, but there are a few sponsoring dealers on here who are also distributers for the big American barrel makers like Shilen, Krieger, McGowen, Pac-Nor, Bartlien etc.
I'm sure some will say that 1:9 is too fast a twist for a 53 gr bullet, but I like fast twist barrels, and have found no loss of accuracy by going as fast as 1:7 in a .22. Besides, if you ever want to use your .22-250 for big game, the 53 gr TSX needs a fast twist.