I start about really shooting about 4 months before the season. Just start by putting arrows on a target, don't worry too much about being super accurate, that will come. Just work on perfect form and building the muscles. Then about two months before, start really working on grouping and accuracy. About one month before, I start really hitting the target with broadheads to get my final accuracy dialed in. Then during the season, when I don't get to shoot in the field, I come home a toss a few everyday just to keep the muscles in shape. Has worked so far, 17 seasons, and 13 elk!
270 A.M Custom