I purchased a Bushnell Arc range finder for a future sheep hunt. Shooting off the house roof at an 11 degree decline at 44 yards proved no effort for it. So tonight I hauled a target up to a friends switchback road and left a target on the lower switch. Got up above and hit the range finder. The Arc program said to shoot for 19 yards at about a 30 degree decline. I shot for 19 and perfecto, right on. This thing is cool!
Now I have to go back over with a better target and shoot some more. The arrows were shooting through into the gravel road. Neat product.