Hello experts,
to sight in scopes or finding the best load for a rifle, I want to exclude other factors as much as possible.
There are no bipods on my hunting rilfes and I´m using sand bags at the rear.
What is the better option to get the most stable position at the front, a bigger sand bag or a rifle rest?

to sight in scopes or finding the best load for a rifle, I want to exclude other factors as much as possible.
There are no bipods on my hunting rilfes and I´m using sand bags at the rear.
What is the better option to get the most stable position at the front, a bigger sand bag or a rifle rest?