ORIGINAL: BGfisher
ORIGINAL: TFOX
ORIGINAL: BGfisher
Assuming the bow is tuned pretty well, horizontal spreads are often a sign of too long a draw. Try doing some minor tweaking. You'd be awfully surprised at what 1/4" shorter can do for you.
I have found for me personally that it is a sign of being too SHORT.Both short and long cause grouping problems.
True, but how many people do you know that shoot too short? Not many. I guess that's why I said long.
Actually,nowadays with the internet and everyone saying too long is a problem,I am seeing too short as much as too long.

Atleast in shooting circles,the average Joe hunter is still shooting too long.
I have seen his pics and he is within normal ranges and a 1/4" either way might yield a positve result.
If I were a betting man,I would bet that the not using proper release techniques is the culprit but not being there in person makes it impossible for me to tell.