I always used this particular glove (http://www.intershoot.co.uk/acatalog...e-110-850.html ) and now I am back shooting its one of the first things i bought.

It really helps when you want to get further up a peg when prone. But the main reason I find it helps is the back of the hand is fully covered with the grippy material so the rifle will not slip if you are resting it across the back side of the hand while gripping something else - particularly with supported standers.