I picked up some Beeman hollow point coated pellets today on clearance and was wondering if these were "good" pellets. I know a "good" pellet is whatever pellet your gun shoots well but was just curious if anyone shoots these with any success. Also, what does "coated" mean? They are very short pellets in length and are a very dark gray color. I assume the coloration is due to the coating, is there any benefits to a short pellet length?