Kermit, shooting off a bench is not as easy as many people think - sounds easy, but there are good as well as poor techniques. good technique will cut group sizes to 1/3 of what poor techniques give. How you sit, how you breath, all is important - seat height, rifle support, how the rifle is cheeked - all proper techniques must be learned. It's best to watch an accomplished "stool shooter" shoot, and emulate everything he's doing.
Shooting accuratel and with precision from rests are truely difficult shooting sports. This accuracy game is full of pitfalls, just as offhand shooting is. Prone position, even with a chunk is almost twice as hard as bench shooting & the groups show this. Getting a 1", 10 shot group off a chunk from a rifle capable of shooting 1/2" 10 shot bench groups at the same range, would be very good shooting, It's almost as good as getting 1/2", 10 shot groups off the bench at 50 yards with open sights off bags.