For a true alpine rifle, weight is the first consideration. I spend a lot of time and effort keeping my pack weight and rifle weight low on sheep hunts, and cant even fathom considering a suppressor for sheep hunts. I literally cut the handle of my toothbrush short to save weight. My alpine rifle I built expressly for sheep hunting weighs 6 pounds even with a Leupold 3-9 compact mounted in Talley lightweight rings. It is a 280AI with a 23 inch PacNor barrel. It has a Brown Precision Kevlar stock that weighs right at a pound. It doesn't matter what your physical fitness level is, the lighter your pack weight, the further and faster you can go.
Accuracy is the second most important consideration. In the alpine, terrain features can make it very difficult to close the distance. It is easy to say close the distance, it is quite another thing to actually do so when you may have a brief weather window and there is a chasm with no cover between you and the game.
The third consideration is a potent enough chambering for what you will be hunting and the distances you may be shooting. At least that's my take.
Accuracy is the second most important consideration. In the alpine, terrain features can make it very difficult to close the distance. It is easy to say close the distance, it is quite another thing to actually do so when you may have a brief weather window and there is a chasm with no cover between you and the game.
The third consideration is a potent enough chambering for what you will be hunting and the distances you may be shooting. At least that's my take.