AKRob,
I was taught to slow it down and shoot slow and smooth. This helps build muscle memory through perfect practise. Since I'm not sure how experienced you are, please don't think I'm being condescending if you already know the things I say.
I like to start close, 5-7 meters or so, and shoot 3-4 inch dots. Personally, I fire contolled pairs in training. Sometimes I work on accuracy and take it real slow, just work on the fundamentals, and at others I speed it up with double taps, and rapid fire strings of 5-6 rounds. I know others who start even closer, and then move the target out.
Two things: Unless you're testing your accuracy "cold", start close and move out, and start slow and get faster. I once went to the range and started slow, then got fast. Everything was fine until I tried to slow it down again. At that point it really takes a lot of concentration. Which, now that I think about it, isn't such a bad idea anyways. Slow, fast, slow, might be a realistic way to train the mind to concentrate on your shots under stress. And to me that's the whole idea of training.
About the best drill for improving accuracy is the ball and dummy drill. Have someone load a magazine with 5 or 6 rounds and load two dummy rounds in there. Then practise your slow aimed fire. When you come to the dummy round you will notice any mistakes that you make. A buddy told me he could cut my group sizes in half in 2 or 3 hours, and I thought he was bragging (especially since he is one of the best shooters I've ever known). After 1 hour of the BADD, sure enough, my group sizes tightened considerably. Any time my groups start getting sloppy, I still go back and do it.
As always, watch the front sight and remember,
Slow is smooth
and smooth is fast.
Chuck