Recently the RCMP (Royal Canadain Mounted Police) have moved to declare magazines of more than 10 rds for the Ruger 10/22 as a prohibited device. Click here to see the report by Calibre, a Canadian firearm magazine.
For those not familiar with Canadian firearm restrictions typically rifles are limited to only 5rd magazines while handguns can enjoy double the capacity at 10rd magazines. .22LR however has no limit for rifles. The RCMP however sees that people can use these high capacity magazines in the Ruger 10/22 Charger which is a handgun and since handguns are limited to 10 rds and the higher capacity magazines can be used in the Ruger Charger they should be banned.
Here is a recorded phone call with the Canadian Firearms Centre.