Arrow Flight

[RadSav]

I think if anything it would be the other way around.  He would shoot low here.

It wouldn't be a huge difference but depending on arrow and the accuracy of the individual that could make a difference.  More fletching the bigger the difference in the heavier air.  Becomes more noticeable the further your shoot.

If it is more than a slight difference at say 30 yards then it's most likely mechanical.  Most common causes are peep slippage and string or cable creep.  With BCY 8125 on a single cam bow I've seen string creep effect 30 yards by as much as four inches in a single day.  That rarely ever happens with 452X.  There are usually witness marks on the string if the peep has slipped.

On a hybrid cam there is much more tension on the power cable than there is on the control cable.  So one usually creeps faster than the other.  This pulls the cam out of timing rather easy.  However, that usually advances the upper cam making it shoot lower rather than higher.

I would shoot 20, 40, 60 & 80 yards without making a change.  If you only see a difference at the longer ranges it's likely the difference in altitude.  If it presents at all distances it's mechanical.  If it's a single cam bow I would put a couple twists in the control side of the string and see if that corrects it.  If not slide the peep to reset 30 yards and everything should fall back in line.

[RadSav]

It's a bowtech that about sums it up.

Less likely to see string creep effect a binary cam.  So more likely a Hoyt or Mathews single cam. 

However, the faster the bow shoots the more you will notice a change in air density resistance.  So if altitude is the issue it could be a Bowtech

Or a Bear, or a PSE, or a ...

[D-Rock425]

It's a bowtech that about sums it up.

Less likely to see string creep effect a binary cam.  So more likely a Hoyt or Mathews single cam. 

However, the faster the bow shoots the more you will notice a change in air density resistance.  So if altitude is the issue it could be a Bowtech

Or a Bear, or a PSE, or a ...

you just never let me have any fun.  I really like to poke fun at these guys because they are hunting and shooting buddies.

[RadSav]

you just never let me have any fun.  I really like to poke fun at these guys because they are hunting and shooting buddies.

And I like helping them out...well...because you're a Hoyt guy


Although I have a feeling you might be a Mathews guy by this time next year.  Only six more days and you should be able to shoot the new one!  Probably the most anticipated new Mathews release ever!  Even I'm getting excited for this one!!

[huntingaddiction]

It is a bow tech and thanks for setting drock straight RADSAV.   The bowtech has been shooting well for me.  We will take all this into consideration and look at it!

[RadSav]

The binary or overdrive cams are mirror images of one another.  So usually creep doesn't present itself very much.  Probably more in rest cord tension than anything else.  If it is a new bow it could be an 8190 string and  I've had some inconsistency playing with that stuff, but again being a binary there usually isn't much noticeable change. 

If it's a Bowtech produced prior to the Admiral or it's one of the aluminum inserted 10# club limbs it could be a failing limb issue.  I'm a Bowtech fan, but I refuse to shoot those limbs.  Anyone who has ever produced that limb design, regardless of manufacture, has had some sort of issue sooner or later.  I used to have a strict policy, "No Mathews and No Bowtech...Ever!"  Mainly due to that limb design.  But everything changed around the time Savage started producing the Admiral and Mathews started producing the better limbed McPherson.

The new string materials while being brilliant in color and quite creep resistant also have a shortcoming.  And that is they are extremely slick and non porous.  So glues don't stick well to them and serving doesn't always stay where it is suppose to.  As a result of this issue peeps slip easier and center servings don't often allow much twisting of tied on nock sets or D-Loop to change nock height.  I now tie in peeps with much more serving thread and in a different pattern than I use to only a few years ago.  Plus I am much more aware of how I apply pressure to my D-Loop.  Making sure I always pull straight back instead of up as I draw in an attempt to eliminate any nock height slippage.

Seeing as it is a Bowtech and you are now shooting high at a lower elevation I'd say the logical cause is a slipped peep sight.  Sight in at 30 yards using nothing more than moving the peep.  Once completed go back to 80 and see if your marks are still good.  If they are further secure your peep servings with some waxed dental floss or more serving thread.  And then mark the distance from your D-Loop to the peep aperture center somewhere on the bow.  So if it changes again a quick measurement will tell you if the peep is again the problem.  If it measures the same you know you have some bigger problems.  All archers should do this!!!

[RadSav]

One other thing I should probably mention in regards to guys shooting high here in the PNW when they don't in hotter regions.  When your hands get sweaty you often grip the bow with a higher degree of consistency than you do when your hands are dry or sticky.  So coming from Nevada you could very well be applying more heal to the grip here than you were there.  Take some shots being conscious of allowing only the pad of the thumb to apply pressure to the lower part of the grip.  You might be surprised at how much difference you have in point of impact.  And this impact point is usually lower than if you apply too much pressure with the heal of your hand by digging into the grip too deeply.

Good luck, I hope you get it worked out quickly.

[coachcw]

check the tune and resight

[Greg Mullins]

I think it's from slouching.You see coming to Washington the weather puts you into depression causing you to shoot funny.Most people I know suffer from this medical condition. There seems to be no cure but getting a new bow provides temporary relief. But to be serious I'm guessing that somethings out of tune or even just one of those days when nothing flys right. I'd start with the rest that seems to be the issue when I've traveled.

[Come Get Some]

I sight my bow in at 400' ASL here in Roy. We hunt up to 11,000'. I do not notice enough difference to change my sight. I would bet it is a creep or stretch issue in your strings or cables having to do with the different climate or humidity. Get your bow a good rain coat

  What string material are you using?

 

[D-Rock425]

I believe he may still have stock bowtech strings.