Shaft stiffness and MP67s

Just purchased a new set of Mizuno MP 67 with Project X 5.5/Project Rifle shafts from eBay. I used to have AP2 710 with TT S300 and I traded that in because I just didn't like the way it look at address. The new set I got has Project X 5.5 on the 9 iron and PW. The rest are shafted with Project Rifle shafts. Can you guys explained the rationale why someone would do that?? I read that shorter irons should have stiffer shafts than of longer irons. What do you guys think??? I am about 8-10 handicapper. Usually shoots around mid to high 80s. My driver swing speed is about 91

Just purchased a new set of Mizuno MP 67 with Project X 5.5/Project Rifle shafts from eBay. I used to have AP2 710 with TT S300 and I traded that in because I just didn't like the way it look at address. The new set I got has Project X 5.5 on the 9 iron and PW. The rest are shafted with Project Rifle shafts. Can you guys explained the rationale why someone would do that?? I read that shorter irons should have stiffer shafts than of longer irons. What do you guys think??? I am about 8-10 handicapper. Usually shoots around mid to high 80s. My driver swing speed is about 91

Help!

Starting multiple threads with the same question in them is hardly going to make people want to help you. Stop spamming.

Sorry I just wanted some help

You're going to need to be a little patient and wait for someone to come along who knows the difference between Project X and Project X Rifle shafts.

It might also help them if you say what the flex of the Project X Rifle shafts is.

It's the same as the project x. 5.5

Shane, I've never heard of a "Project Rifle" shaft.  If my memory serves me correctly (as I get older it doesn't always), Rifle is  manufacturer that originally made "Rifle" shafts and then later made Project X shafts.  Since then True Temper has purchased Rifle, so I don't think you will see the Rifle name unless its an older shaft.  I suspect that they are really the same shaft, but for whatever reason have a different shaft band.  Just my opinion

my bad, what i meant was Precision Rifle rather than Project Rifle.  Quite similar shafts huh???

Oops, I think I made a bad too.  Precision is the manufacturer of both shafts.  They are distinct and different shafts, but I think they are very similar.  Unless you are a professional golfer I doubt the average joe would notice any difference.  Why someone would mix a set?  Maybe they were just trying different shafts for fun.  Or maybe he got frustrated and broke some clubs.