Im looking for an air rifle?

70 yards is the hell of a long way for an air rifle. Do you really mean 70 yards? Most peoples ideas of ranges are pretty way out. If you measure your proposed range you will most likely find that it is nearer 50 than 70. For that kind of range you need a ,22 lr, with a good silencer. Get a good one, the best you can afford; junk always costs more in the long run. You can shoot shorts in it too if you want less danger zone.