The 1050, a great machine! Easy to add a bullet feeder (Kiss bullet feeder). The primer depth seating is adjusted by a screw on the top of the Toolhead, easy. You must change out the primer magazine tip every 20,000 rounds also. No you will not be able to feel the primer setting in the pocket, you'll know there is a problem when the machine binds or a primer falls out as the case is progressed. After that if no primer is in the pocket of course powder will be seen under the shellplate. You can measure your primer depth or just look to see if it is dented by the Swage Rod. If it is just back it off a little.