a quality gun rest is really nice to have but you can get the job done with sand bags.
A really affordable rest is the Caldwell tack driver rest. It runs $40 unfilled and $80 filled. You add a sand bag to the rear of the stock and its a real solid shooting rest.
And if you want a really nice rest, but one that hurts your rear end when you pay the bill is the Caldwell CFX Lead Sled. This runs quite a bit over $300
