Either one can be aimed quickly and very accurately. Variable power scopes within the ranges of 1.5x to 7x are ideal for this purpose. Open sights, which are the standard on most rifles are difficult to line up quickly and accurately. Another consideration is the weight of the rifle. Most rifles used for hunting weigh between six and nine pounds.
Lighter guns are much more comfortable to carry, and the heavier guns kick less.
The heavy rifles are easier to hold steady and are better for stand hunting and long range shots. It is recommended that you use a sling to tote your rifle when you are not hunting. The action you choose will depend much on your need for a quick second shot, accuracy plus your personal preferences. Keep in mind not all calibers are available in each type of action. Actions can range from sturdy single shots to reliable and accurate bolt actions, to fast shooting lever actions, pumps and semi automatics.