I've been shooting alot the last 2 months. Getting ready for the elk. Any way today i started shooting 5 inches low. I think maybe my nocks have moved. I nocked a arrow and measured from arrow down to riser front and back. Its a 1/16 inch low in front. Should it be the same, so its level. thanks

I have heard that it is better to have your arrow angled down about 1/8".

Thats hard to say, some bows shoot better if they are a bit nock high.... are you sure you did not bump your sight by chance..

Give the entire bow the once over. Your sights may have moved, your rest may have moved, you cables may have stretched indicating they are about to break, you could have a cracked limb....could be a lots of things. I would bet either your rest or sights have moved.

This measurement won't tell you much. Simply changing limb tiller will cause the nock point to move up or down the string and yet the bow can still be in-tune at the new height. Accessories may have moved or the string may have crept. Limb bolts may have been turned unequally. Lots of things could cause this.