I find that when I get the smooth swing, the ball goes farther. I expect it's just a matter of time!
I debate back and forth on the 4 iron vs. the 60... presently the 4 iron is in the bag, and the 60 in the trunk, but for a while last year it was the other way round. I rarely take a full 4 iron swing, but an easy half swing can stay pretty low and cover a lot of distance. the 60 drives me mad, I get tempted hit full shots with it, and it's just too hard to be consistent!