?? Short barrelled rifles? 16" minimum here, much less and you have a handgun..likely illegal in Canada. I cannot fathom why one would want a rifle with a barrel of less than 16"..even the .22 LR starts losing power below that..say nothing about the centerfires. But hey if you want a rifle with a 10" barrel..your choice. Maybe you can find a Mauser "broomhandle" with stock.
BTW..Didn't realize I said anything about Canada..