There
are open spaces in Manitoba, H4831, and longer shots do present themselves. Heck, parts of Manitoba look just like Saskatchewan!
3X9 will cover
all your shooting needs in Manitoba.
Joe, someone who is planning on shooting game at ranges well beyond 400 yards and is using a range finder, will want a high power scope with knobs to adjust for the super long range.
For the other 99% of us, which will obviously include the OP, a three or four power fixed scope, or like I suggested, a 1.5 to 4.5 good variable, will be all the scope needed and any poor shots made, will not be the fault of the magnification of the scope.
I shot quite a lot of game, including several mountain goats, with a 30-06 and aperature sights, with an excellent flat top blade front sight.
Whenever I put the top of that post on where I wanted to hit a game animal and released the trigger, there was a dead animal. With only one exception. A bull moose was standing in the snow on a side hill. I estimated 400 yards and held accordingly. The moose trotted off and I went to where he had been. I guess the distance was more like 500 yards, because my bullet hit the snow of the hill, just behind his front legs, but also just under the animal. If I had been using an 18 power telescopic sight my bullet would have hit in the same spot, because I held for 400 yards, but the animal must have been about 500.
A scope allows for much better visibilty in poor light conditions and is an improvement over, even good, aperature sights.
But I will stick by my judgement, no more than 4 or 5 power is needed for any normal big game hunting in Manitoba, the province where I was born.
One to three power is ideal in bush conditions, where high power is a definete hindrance.