Shiming your bow sight

[Cuz]

Does anyone shim their bow sight to make the bubble level when your at full draw, even though the bow itself is not level?
How's that working out for you? Pros and cons?


Thanks

[arrowdiger]

If its not level then you are canting your bow to the left or right.

[Greywolf in Hawaii]

When I set up a bow for Customer I did a 3 axis level set up.

Just the target shooters I did a extra 4th axis on the drawn bow.

Most of the time, walk back tuning catches issues big enough to even start to show on a hunting rig.

[Rockjock]

Does anyone shim their bow sight to make the bubble level when your at full draw, even though the bow itself is not level?
How's that working out for you? Pros and cons?


Thanks

I think you may be referring to 3rd axis and I don't use shims but my sight has 3rd axis adjustment.

If its not level then you are canting your bow to the left or right.

True if your on level ground or if your 3rd Axis is set.

When I set up a bow for Customer I did a 3 axis level set up.

Just the target shooters I did a extra 4th axis on the drawn bow.

Most of the time, walk back tuning catches issues big enough to even start to show on a hunting rig.

I have never heard it called 4th axis. I just believe the 3rd axis needs to be set while drawn.

Here is good video explaining it.

[ame="http://www.youtube.com/watch?v=WX6ik-Ed5kk"]3rd Axis Leveling - YouTube[/ame]

[txdukklr]

i don't buy a sight anymore that doesn't have 3rd axis and I make all my adjustments on that.

[Cuz]

I think you may be referring to 3rd axis and I don't use shims but my sight has 3rd axis adjustment.



True if your on level ground or if your 3rd Axis is set.



I have never heard it called 4th axis. I just believe the 3rd axis needs to be set while drawn.

Here is good video explaining it.

3rd Axis Leveling - YouTube

I'm referring to when the bow is level, in a vise, the sight bubble is level. When I'm at full draw, and it feels natural, the sight bubble is off (I'm canting). This makes me hit left, especially at longer ranges.
Some have suggested I "shim" my sight so that the sight is level when Im at full draw, feeling natural. And this will fix my being off, to the right, at longer ranges? Any thoughts from experience??
Thanks!

[Rockjock]

What sight are you using?

Short answer, not from experience because I don't shoot this way, but yes you can cant a compound bow. You miss when you cant because your sight pins move left or right. Not because of how you hold your bow. Get your pins dead vertical with your natural cant.

[bowhuntntxn]

I'm referring to when the bow is level, in a vise, the sight bubble is level. When I'm at full draw, and it feels natural, the sight bubble is off (I'm canting). This makes me hit left, especially at longer ranges.
Some have suggested I "shim" my sight so that the sight is level when Im at full draw, feeling natural. And this will fix my being off, to the right, at longer ranges? Any thoughts from experience??
Thanks!

You will still hit left, unless you extend your longer distance pins to be in a vertical line with the others. I suggest you play around with hand position until you find a way to hold you bow vertical with it feeling more natural, or get used the not natural feeling.

Shimming the top or bottom of the sight is not going to work IMO.

[Rockjock]

Gene Lueck would disagree...

A SIGHT LEVELING CONCEPT
By Gene Lueck

http://unofficialatfaq.tripod.com/level.htm

Now lets put the sight on the bow. Contrary to popular belief it is not necessary to align your sight bar with the string. I would ask you if you have ever seen a crossbow with the sight bar aligned with the string? Simply attach the sight mount to the bow and place the sight in it. Tighten down the sight knob and draw the bow. If the level does not feel comfortable it is totally acceptable to cant (lean) your bow. I personally cant my bow between 3 and 5 degrees to the right as I am right handed. This cant should be a point at which you are comfortable at full draw. You can determine this point by closing your eyes, drawing the bow, opening your eyes and checking the position of the level. Since we have set the level bubble in relation to the sight bar, you must not loosen the screws on the sight block but in stead, loosen the screws that attach the sight bar to the sight extension. Once these screws are loosened, you must experiment by canting the bar one way or the other and tightening the screws until the bubble is in the middle and you are comfortable at full draw.

[Rockjock]

I'm referring to when the bow is level, in a vise, the sight bubble is level. When I'm at full draw, and it feels natural, the sight bubble is off (I'm canting). This makes me hit left, especially at longer ranges.
Some have suggested I "shim" my sight so that the sight is level when Im at full draw, feeling natural. And this will fix my being off, to the right, at longer ranges? Any thoughts from experience??
Thanks!

I had to re-read your post. I don't know how I got so far off from what you were asking. Guess I got distracted by the other comments. Back on track now. I don't have pros and cons for you but hope the link I posted will help answer some questions.

[Cuz]

Gene Lueck would disagree...

A SIGHT LEVELING CONCEPT
By Gene Lueck

http://unofficialatfaq.tripod.com/level.htm

Now lets put the sight on the bow. Contrary to popular belief it is not necessary to align your sight bar with the string. I would ask you if you have ever seen a crossbow with the sight bar aligned with the string? Simply attach the sight mount to the bow and place the sight in it. Tighten down the sight knob and draw the bow. If the level does not feel comfortable it is totally acceptable to cant (lean) your bow. I personally cant my bow between 3 and 5 degrees to the right as I am right handed. This cant should be a point at which you are comfortable at full draw. You can determine this point by closing your eyes, drawing the bow, opening your eyes and checking the position of the level. Since we have set the level bubble in relation to the sight bar, you must not loosen the screws on the sight block but in stead, loosen the screws that attach the sight bar to the sight extension. Once these screws are loosened, you must experiment by canting the bar one way or the other and tightening the screws until the bubble is in the middle and you are comfortable at full draw.

THIS is what I'm asking about. Sounds like he thinks, or knows?, its acceptable and will help with canting/hitting right at longer ranges.
So, to be clear, I need to adjust my 2nd or 3rd axis?

[Cuz]

You will still hit left, unless you extend your longer distance pins to be in a vertical line with the others. I suggest you play around with hand position until you find a way to hold you bow vertical with it feeling more natural, or get used the not natural feeling.

Shimming the top or bottom of the sight is not going to work IMO.

Aren't these the same in one?

[Rockjock]

THIS is what I'm asking about. Sounds like he thinks, or knows?, its acceptable and will help with canting/hitting right at longer ranges.
So, to be clear, I need to adjust my 2nd or 3rd axis?

He knows what he is talking about. Second person ever to shoot 300 at Vegas and shoots with a cant.

You are setting your 2nd axis. Your sight may be 2nd axis adjustable without shims.

[Cuz]

I have this sight in my box...

http://m.basspro.com/SpotHogg-Real-Deal-Bow-Sight/product/46707/

And this sight currently on my bow...

http://m.gandermountain.com/modperl/product/details.cgi?r=view&i=414129

FYI: I just took the SH off to see if the sight change made a difference in the bubble issue I'm having. Nope...




I believe shiming is my only option with either, isn't it? Thanks for info, Rock!

[Cuz]

He knows what he is talking about. Second person ever to shoot 300 at Vegas and shoots with a cant.

You are setting your 2nd axis. Your sight may be 2nd axis adjustable without shims.

This is good to know! Little more confident in his advice now.