Iron shafts

I got fitted for RIP Phenom 70 x-stiff driver shaft about a month ago and have been hitting my drives much longer with a lot more control than I had before. So I decided to look into changing out the shafts in my irons as well, but I'm having a hard time figuring out what specs I need. Do you guys know any good guides online for choosing iron shafts?

Check out the GolfWorks shaft selector. It will give you a shaft band based on swing features. From there, you would need to try out different shafts from that shaft band.

http://www.golfworks.com/article.asp?ai=202

Also, see if you can get a Deep Red Tour II demonstrator 6 iron. Then, you could try out different shafts in the demonstrator and compare it to your current 6i performance.

What shafts do you have currently in your irons? It could be more just the clubhead than the shaft.

Use the Mizuno shaft optimizer short list as a starting point. Test out the recommended shafts in the Miz clubhead you want to buy.

Two of the three felt a bit harsh when I tested them out in the JPX-825 and JPX-825 Pro.

This is a good idea, and the optimizer hit the nail on the head for me. It actually showed me that I needed a stiffer shaft than I thought I would need (I previously used a KBS Tour Stiff) by recommending a KBS Tour X (soft-stepped by one) which worked nicely for me.

Cool thanks, the shaft optimizer thing sounds like a cool thing to try. I'm using dynamic gold S300s

I recently went through this trying to figure out what shafts I wanted in my irons. I was playing MP-59s w/ DG S300s but I knew I needed to go to a stiffer shaft. I did a fitting and tried a bunch of different shaft/head combos. Tried KBS Tour X, C-Taper X and S+, and Project X 6.5 and even though my numbers were still solid, none of those shafts felt right to me. I really liked the feel of Dynamic Gold so I ended up going with X100s in an MB head. I've picked up distance and improved trajectory with the new setup. For me, all of these shafts performed well but it came down to what I felt most comfortable with.