Since graphite is typically longer, that is 1 physical thing to reduce accuracy.

Less weight may or may not cause you to swing less accurately. Everybody has weight that they swing best, maybe the graphite is yours.

Swinging faster will most likely be a cause of less accuracy. I'm sure the ability to swing faster will mess up your timing.

But I'm sure, given time, you will adapt nicely.

I never tried graphite irons, I did try DG SuperLite and hated them, used them 1 round and they were gone. I'll just stay with regular DG's. I'm sure over time I would have adapted to the lighter weight, and probably liked them better, I just wasn't willing to go thru that change.

Thank You for your input.  I just cant get the thought of the graphite out of my mind after trying a demo club, but I do not want to have less accuracy than what I have with the steel.

I actually have a persimmon 34 degree hybrid (with TT Lite XL) in my bag and I occasionally carry a couple Louisville Niblick persimmon woods (same shaft). 

At one time, when I was finding it difficult to get used to graphite on woods, I actually had a pair of Titleist 975 woods that I had reshafted with Dynamic Gold steel shafts.  My issue with graphite woods in general was that they were too long.  Now that I learned that taking 10 grams off the grip weight restores the swingweight by 2 points , my standard treatment has been cutting the shaft of a graphite wood by 1/2 inch.   There are some woods well left alone.  A standard grip is 52g; Winn Excel RF is 42g and Winn Lite is 25g (so you would use the Lite if you found out you had to cut the shaft an inch for it to fit properly).

If both are the same length, the graphite shafts are about 4 swingweight points lighter (to maintain same swingweight, one has to increase the length of the graphite shaft by 1/2").

Some vendors actually make the clubs with graphite shafts 1/2" longer to maintain the same swingweight.  With this being the case, one may have to have the clubs bent 1/2 degree flat for proper fit (or someone like me, who is 6'1" with a WTF of 35" would play standard lie clubs vice upright).

Steel is more accurate (try hitting a graphite iron a little harder than normal - you may end up fading the ball).