
A decade ago a trend existed amongst bow manufacturers to incorporate high wrist grips into many beginner bows. I cannot say whether or not a high-wrist grip--a large wooden or composite grip resembling a turtle shell--truly affects a bows accuracy, but I can relay the affect moving away from them had on my own shooting.
Shooting form and the grip
Archery is a sport of rigidity. The human musculature allows for the body to nearly lock into a rigid form to support the weight of a bow at full-draw. For example, the top photo is of myself with a well-tuned Limbsaver Proton at the appropriate draw length. The rigid, "locking" effect is visible from where my release hand notches into place behind my jaw bone. Locking also occurs down my nearly-straight left "bow" arm, which supplies ample tension during the shot (hence back-tension shooting!). There is, however, one place you do not want rigidity in your shot: the grip.
Grip evolution
Many new bow manufacturers have switched riser designs to a low-wrist style of grip (see photo of my new PSE DNA's nearly non-existent grip on right).
Low-wrist grip's allow for a larger surface area of the palm, essentially the "life line" running down you hand, to come into contact with the riser. This contact improves stability during the shot process.
Conversely, a high-wrist grip focuses the contact into the dough-like wedge of flesh between you thumb and index finger, minimizing contact and allowing the "squishy" muscle to shift when the draw weight of the bow settles on the hand. It also kinks the wrist into a non-rigid movement upward.
Your hand pressure on the grip is also important. Notice in each image how my hand is placed: slightly cupped inward, fingers not touching the riser. This minimizes contact with the bow during the shot process, allowing for a clean release of the arrow (no flinch!).
Another trend in bow design is to minimize the arrow shelf on the bow, essentially taking the throat (where my finger is pointing on the right image) higher and closer to the center point of the bow. The design allows for the hand to smother the top end of the grip, and allows for more downward riser area for a proper low-wrist grip.
The take-away from this is, if you have never tried a low-wrist or medium-low-wrist grip, to try it head to head with your current set up. Pay close attention to you shooting form with each shot and see the difference!
One final grip hint: We are approaching the cold late season, and most hunters tend to grab their bow and run to the field with a few more layers on, including gloves. Understand that every layer you add, whether it's an outer shell with thick arms, or a thin pair of gloves, place more distance between you and your bows fit. A difference of 1/4" on the bowhand because of a glove, coupled with another 1/4" of padding the release on the wrist can make a big difference in the field. So, be sure to shoot prior to season with all the layers you intend to hunt with!