This chronograph works as advertised. - Caldwell Ballistic Precision Chronograph

I have used this for both rifle and bow and even my sons bb-gun. As far as the limitations I have found on a clear sunny day in direct sunlight it occasionally failed to read. I did go to the trouble to place in the shadow of a building or table. After positioning in a shadow I had no further issues. As far as accuracy this thing is dead-on. When I entered the chronograph bullet speed of my 300 WM the bullet drop from 100 yard zero was exactly what my ballistic calculator predicted at that speed at 200 and 300 yards. I would definitely recommend this product.