4x, 1-4x, 3x9 are all candidates
In the case of the Barrett M82 rifle, about 30-31 lbs, depending on the model. The scope may add several more pounds if a night vision scope is used.
The L579 was a model number that was used by Sako.it describes the action type.The info that you provided will not indicate what caliber that you have.Your Sako rifle should be marked as to what caliber your rifle is chambered for,somewhere on the firearm itself.
A long hollow tube was first used as a scope.
The .45 caliber bullet is not used in a sniper rifle.
There were many.
springfield 1903 rifle........30/06 caliber
Any caliber can do the job. Most states regulate what can be used.
50-1000 and up
Caliber
Only if the scope is designed for an air rifle. Because of the recoil being different on an air rifle than a firearms rifle. Air rifle scopes are made differently than firearms scopes. A firearms scope can break it's glass mounts if it is used on an air rifle.
The rifle shown is a Springfield M1903. It is chamberd in .30-06(7.62x63).
44-40