Someone explain this to me.
 

I was shooting my MM VFT yesterday with a friend, and decided to decrease my DW. SOoo- I turned back the limb bolts 1.5 turns (each). I was shooting at a 30 yd target. I figured - less poundage = lower arrow velocity = more arrow drop - right? WRONG! My arrows now consistently grouped 6" higher than before. I checked the poundage, and it had decreased by about 4 lbs. What gives??

RE: Someone explain this to me.
 

Did you have the limb bolts bottomed out before?

RE: Someone explain this to me.
 

Creeping off the wall at full poundage?
Limbs not equally backed off to begin with or at present setting?
Peep moved?

RE: Someone explain this to me.
 

change in anchor pt assuming you have no peep to line up to the same each time.sights have moved,nocking pt off.go back and check everything and make sure it is set just right and that everything is good and tight including rest.

RE: Someone explain this to me.
 

No-the bolts were 1 full turn short of being bottomed out. Everything should have been tight - all I did was back off the limb bolts (equally). I moved my sight to compensate, and I group just fine. My anchor didn't change (at least it shouldn't have). I did notice that the moleskin on my MZE claw has taken some abuse the last 40-50 shots, which tells me I have clearence issues on my rest - but it shoots a PERFECT bullet-hole through paper. Suggestions?

RE: Someone explain this to me.
 

Sounds to me like you got your tiller out of whack and let your nockset drift low. You wouldn't believe how screwed up your bow can be and still tune to a perfect 'bullet hole' if the tiller is whompyjawed.

That's the first thing I'd check. If tiller is not the same, top and bottom, then make it the same. Then reset your nock height and peep. If that's not it, then you'll need to look at cam timing. Do the easy stuff first though.

RE: Someone explain this to me.
 

I've never checked tiller before[&o] - can someone please explain. The bow is a '04 MM VFT - 70#, 29.5" DL - Infinity cam. Thanks!!

RE: Someone explain this to me.
 

Run a piece of fishing line from the top axle to the bottom axle and then measure from where the limb meets pocket to the fishing line.

measure both top and bottom.

RE: Someone explain this to me.
 

OK - I was doing the above when I noticed that one of my cable strands has popped - right where it sits in the cable slide - could this be a possible culprit?

RE: Someone explain this to me.
 

I ran some fishing line from the e-clip on the top axle to the e-clip on the bottom axle, pulled it tight and measured from both the front of the limb pocket and the back of the limb pocket (where the limbs meet) on both top and bottom. Top limb=21.8 cm, Bottom limb 21.9 cm (both essentially equal). Did I do this right?

RE: Someone explain this to me.
 

Definitely could be. If not then a cut strand is still a reason for major concern. I would replace the string or cable before shooting it again.

Yes, you did it right and yes, it is essentially the same when we are talking about cm. :)

Replace the cut string/cable and then start from scratch.

RE: Someone explain this to me.
 

That would be my guess! Your peep moved when you backed off the limbs and now your anchor point moved. Do you find yourself adjusting your head now when at full draw to see thru the peep?

RE: Someone explain this to me.
 

Not that I noticed, but anything is possible. I lowered my rest, and had to re-adjust my sights, but I am still getting contact on the MZE. After seeing that popped strand - I ordered a new WC cable. I wouldn't guess that everything needs to be changed - the bow is only three months old. I'll just pick it up for now - and continue the saga when the new cable arrives:D.

RE: Someone explain this to me.
 

I would also suggest changing the cable slide if that is where the damage occurred in the first place. A hicks teflon slide or NAP "carbon slide" both work very nicely with the bow in question.

RE: Someone explain this to me.
 

When you change the draw weight on a single cam bow you affect the timing of the cam which can affect nock travel and often will change nock point height position (both of which can/will cause POI changes)