My compound bow impact point has moved up and left...over 4 mos or so. The bowsight and rest do not have any loose fittings and had held zero pretty true until 4 months ago, when I noticed it hitting an inch high and left (20 yds). In September, it was hitting 2" high and left, then I traveled with the bow, so figure it got bonked because now impact is 4" high and left. I plan to just adjust the bowsight, but wondered:
1. Does point-of-impact change with ambient temperatures? I don't recall noticing any difference last winter when I shot outdoors regularly.
2. Or do bows settle-in for some reason? It's 3 years old. I treat the bowstring with silicone about every 6 outings. Shouldn't be a string problem, should it?
How long do bow strings last with reasonable care?