any sub 500 fps airgun should not be too hard to pump. my vote would be for any break action pellet rifle like a benjamin classic .22 or a diana 240 or.... there are just too many. Don't know what your limits are, but you should be able to find a combo with scope for $200 at D&L, Scopes and ammo, Trail Marker or airgun source, specialty shooting sports....
Canadian tire tends to be overpriced.