A 1944 .22" rifle was the predecessor of the No. 7 rifle. Canada didn't make No. 9 rifles.
Note that there is no serial number on the left side of the butt socket. e.g. - 0L1234, etc. Is there a serial number on the rear face of the bolt handle? The receiver is one from the batch that was sold off years ago. They were removed from rifles, the butt sockets were scrubbed, and then they were refinished.
The rifle looks to be stocked up in birch. I've never seen a Long Branch .22 that wasn't stocked up in walnut.
How is the front sight base attached to the barrel? Are the barrel and the sight base round, secured with a cross pin, or does the barrel have lugs fitting matching grooves in the sight base? If the former, the barrel is probably a No. 7; if the latter, it is a lined .303.
I think you have a rifle assembled from parts. Looks great, should be an excellent shooter.