I have used Bushnell Banner Dusk & Dawn scopes and find them perfectly adequate for a hunting optic. They are not perfect or ideal by any stretch of the imagination, but they are adequate.
First, put the magnification at 3x and adjust the scope in the rings so that when you shoulder your rifle the scope is where you need it to be, then tighten down the rings.
Second, go to the range, increase magnification to 9x, and at 100 yards zero your rifle with the ammunition you will be using to hunt. Do this from the bench or sled, and be very careful to not let the scope bite your forehead.
Third, crank the magnification back down to 3x and verify the zero didn't wander with a power change, and transition to the standing position.
Fourth, go hunting.
Jimro