I have a possible tuning problem with my spot hogg sight. I have it mounted to a Z7 bow 70/28 and my 20 pin is on center with the wire and is centered on the bow but my 30, 40, 50, 60 yard pins are off center to the left. more to the left as the yardage grows. I'm hitting within 2 to 4 inches of my mark at all yardages while shooting. I'm curious why I have to have my pins adjusted to the left to hit my mark. I'm not canting the bow or gripping the bow, The bow and sight are level. I'm spined properly for my setup 350/29L arrow. Anyone had this problem and have any ideas on what the deal is with my pin adjustment problem or is this just the way I'm releasing the string/arrow to shoot? I dont get it . HELP!!!!
Your static spine may be close but your dynamic spine may be a bit stiff. The sight is not the problem. If you are using a 100 grain tip you could try a 125 grain tip and see if that helps. You could also move your rest in 1/32 increments to the left and see if that helps too. Don't try both things at the same time, though, pick one and try it first. I would go with tip weight first and then, if that helps a little, start moving my rest to get things tuned up.
Set your centershot to 13/16's and try again. If that doesn't improve things, then you need to start looking at tweaking your spine.
Could be a number of things, including any or all of the above. I'd start by putting your bow in a vise and getting a long carpenter's level out; place it on both limb pockets simulataneously and ensuring your bow is absolutely vertical. Then, check your bubble level on your sight to make certain it's on as well (it's amazing how easy this adjustment seems to get out of whack, especially if you just transferred the sight from one bow to another or are setting up a new bow...). After that, I'd check to make sure you're shooting a properly spined arrow and then proceed to walkback tuning to set your centershot as the others have suggested...
All good points listed above, however I had the same problem and it was the axis adjustment. That's not to say it couldn't be the spine either. Just try one thing at a time and you will get it.