Different bows shoot different elevations?

[DanielB89]

I have 2 different bows that shoot the same left and right, but shoot a significant difference in height.  

Like at 15 yards, one bow will shoot around 8 or so inches low.  I can shoot it a few shots and mentally make the adjustment, but it naturally shoots a lot lower than my other bows.  

Is it the shelf height?  any thoughts?

Yep that can happen.  A different tiller, a bow with a one limb heavier than the other, glue lines not equal. Maybe that is why one bow people can outshoot a lot of many bow people.

[AZWarts]

Id take a stab at it being a different sight picture or possibly ergonomics of the other bow. a lot of little factors can make big changes (i.e. grip angle, shelf distance below the eye, etc)

[Frenchymanny]

I had this variation experience with nock height.

For me it was nock too high resulting in lower impact point.

F-Manny

[Sirius Black]

I have this issue with a Hoyt Buffalo. No matter what changes I make to the bow, tiller or nock height whatever, it just shoots higher than the other two bows in my signature below.

[ksbowman]

Size of sight window.

[katman]

I think tiller and grip type play a significant role.

[Woodpuppy]

Are you shooting off the shelf with both bows, or do you have a rest on one? Different limb architecture, arrow weight, and speed?

[DanielB89]

both are shot off the shelf, and the one that shoots lower is made by one of the worst bowyers I know... myself.. haha.


It used to be all I had so it was all i shot.  Now that I have "upgraded", it's always a big adjustment going back to it.

[Pine]

Not uncommon for bows to shoot different .
I have two bows that shoot exactly the same , and both of them are my go to bows for hunting .

[Crittergetter]

Arrow speed plays a major role in trajectory. I'm betting the one shoots a lot slower than the other

Back in the early 70 I had two identical weight limbs for my Bear takedown.  They were not the same.  I know I did not have them mixed because one set was white and the other black, they required a different knocking point setting.  The white set required a higher nocking point and shot faster, but they would not tolerate any kind of nocking point lower than what looked way to high to me.   I put them on a middle riser that had an elevated arrow rest and they were perfect.  They just didn't like the short riser and shooting off of the shelf.

[Orion]

Are they the same draw weight and design?  Either could account for a large difference in vertical impact.  Of course, arrow shelf height above the hand and nocking point can also affect impact, as others have already pointed out.

[BWallace10327]

For me, low wrist will impact higher than high wrist, and visa-versa.

[crazynate]

Yup for me switching my bows it's the grip style that make me make adjustments. I shoot instinctively so it takes about 5-10 arrows and I'm dialed right in. But like Graps said I also use my 2 how's that are the most similar for my main hunting bows.

[Draven]

If you use gap aiming, yes. All the little differences between bow's grip type will alter the result.
I see no difference when I shoot two bows with their matched arrows while instinctive - maybe because I use them often, even in tandem in same session sometimes.