There are a few things you could do.  First you could place tungsten powder down the shaft and a cork to hold it in place.  The second option would be using a light weight grip.  I have 712 MB's as well and I used the tungsten powder because I don’t like the feel of light weight grips.  Hope this helps.  Also in my experience, every two grams of powder will change your swing weight one point. 

i was gifted a set of 712 mb's for my birthday in august. mine were 1 degree upright with x100's. the swingweight of mine were set at D0. Unfortunately, I realized it after i used it for about 3 weeks. I was unable to return or exchange. When I contacted Titleist, they said they would've have used a heavier clubhead if I specified them at purchase. I dont understand this because on the specifications for 712 mb's, it states the swingweights are D2. And they were gifted. I hope you have better luck than I had. I ended up adding 10 grams in the shaft, but since then, 2 clubheads flew off the shaft. Good luck to you.

Lead tape is used all the time.  If you don't like the aestethics of it, you will need to re-shaft them all with a tip weight to get the desired swing weight that you want.

Interesting post and I am surprised no one from Titleist has commented on this yet and offered advice?

I have a similar situation.  Just received my combo set of  712 CB/MB with KBS Tour S+ at +1/2".  They SW from D2.7 down to D2.4 of the MB PW.  At that extra length this does not seem right?  I was expecting D5 and that's what my extra length 735s and AP2s have SW,d out too in the past.

Did I get some light heads here?  If I send back are Titleist just going to add Tip weights to get them to D5?  If so I'll just get a local expert club maker to do it - way quicker.

Thoughts?

Steve

I was told by my local Rep that the KBS Shafts are heaver and X-Stiff being heaver than Regular which the advertised specs defult for advertising. Thus unless otherwise requested, Titleist assembles the irons with the standard heads giving them a standard swing weight of C9 with the upgraded shafts. What upsets me is that no one at my fitting mentioned this, if it would have been mentioned I would have requested them come in D4-5. I mean they write every other spec on that card. How hard would it be? For now Im going with the tungstun powder with a cork. Seeing that my local fitter wants to charge $10 a club to do the tip weight. I hope this helps others avoid this problem, I can say being an avid titleist player for the last 15yrs I am deeply disappointed.

P.S. One day at the range hitting balls ended up leading me to discover something was off and also caused the state of my clubs used to the point of none returnable.

Dick - that response  from your rep sounds bogus to me!!  All things being equal a heavier shaft should INCREASE the Swing Weight not decrease it.  If Titleist say that D2 is the standard well if you order a standard length steel shafted iron then that's what they should be.  I can see + or - 1 SW but not 3.

Thank You for the Great Post. I will be getting mine checked soon. Great information to have.

Swing weight answers and facts ---

  From player testing we conducted in 1993 when we first started custom fitting withTitleist ... we tested players using 5 irons ranging in swing weights from C5 to D5 - NO change in ball flight.  Swing weight is only a feel issue for the player. So it is the players choice NOT a fitting issue.  You can request lighter or heavier head weights... again player decision.

DO NOT tip slug with lead powder as someone suggested. That will move the sweet spot / center of gravity away from the center of the face, as designed, and more towards the heel.
  You can mess with grip weight if you want - again no changing of ball flight -- it will only change the swing weight scale.

These last two things will only trick / change the swing weight reading - they WILL NOT change ball flight.  At the end of the day that is what fitting is about - affecting ball flight .  Players always have the prerogative to change / order whatever they want.

Somebody said change to a heavier shaft - why do that when you were fitted for the other shaft.  Just for the sake of the swing weight scale?  Changing the shaft is a much bigger factor than a few swing weight points.  

By the way, so everybody knows what a swing weight is - one swing weight point equals the same weight as two one dollar bills hanging over the end of the shaft as it sits on the scale.  Even a grip absorbing moisture or drying out could change the reading...
A different scale could even give you a slightly different reading. 

I have seen very few tour players that could discern the difference between 3 or 4 SW let alone less than that.

steve ball, PGA Master Professional
Ballgolf.com
25 years of custom fitting experience / 10,000 fits
C0-founder of Titleist custom fitting, 1992 

Steve

I don't think any here is questioning swing weight effect on ball flight.  We are saying we had clubs built that came in well under the expected SW with no real explanation as to why.  I can certainly feel the SW difference between D2 and D5 or D5 and D8 and I am sure many others can too.  Bottom line it's all about feel.  If the club does not feel good you will not feel confident and make a good pass at he ball.

All we are looking for is an explanation as to why this has happened and what is the solution/fix if anything.

Thanks

Steve -

I agree with you that Swingweight is subjective and it's all about feel. 

But I would challenge you that using a tip weight does not change the center of gravity.  The shaft works on a different axis than the clubhead does.  Since I'm adding weight to the shaft, that would be the same thing as saying a heavier shaft changes the center of gravity, which it does not.  Doesn't matter if it's all at the bottom or spread out over the length of the shaft, that's just not the case.

you can send them bact to titleist for the fix that you need

Hi,  Just to answer a couple of questions in this forum - the standard swingweight listed for irons is D2 with a standard shaft, which in the case of MB, CB and AP2 irons is a Dynamic Gold S300 shaft, at standard length with a standard grip.  Any change to these specs will change the swingweight unless requested.  We do have capability of building to different swingweights within a certain tolerance. 

KBS shafts are a single wall shaft and they are balanced differently than a Dynamic Gold shaft.  The weight of the KBS shaft is higher towards your hands.    What that means is that at standard length and grip, the KBS shaft will build at 2 swingweights light +/- 1 swingweight.  The reason we don't automatically change your swingweight is that we don't know if you are a player that prefers a D2 swingweight or a player that prefers a lighter swingweight, so we will build that set with KBS shafts at the (standard build) D0 swingweight.  If you were fit with the KBS shaft and you liked the feel of the shaft with the fitting head, that swingweight was probaby a D0.  If you know that you prefer a heavier swingweight, you can make that request when placing your order and we can build it up to D2 with heavier heads.   Keep in mind that when we add weight to the tip to add swingweight, not only will your swingweight be higher, but the overall weight will be heavier.  So the trade off is a lower overall weight with a lighter swingweight or a heavier overall weight with a heavier swingweight. 

As far as rebuilding a set to swingweight heavier, that will depend on the heads that were used.  You can set up a swingweight check and reweight through your local pro shop and we will do the best that we can with your heads. 

Do you know what the "standard" swingweight for a set of 712mb's with dg tour issue x100's @ standard length with multi compound whiteout grips would be?  

Thanks!!