[shu]

so is mine. have the 308win also.

with '0' of the circumferential scale placed on the reference line of the base piece, about halfway to the first reference mark on the baseline is visible.

gives me fits, but i just call that zero.
the measurements of case to shoulder width seem to hover around this point; a bit less for unfired, about on for fire formed.

other thing gives me fits is the overall length dummy cartridge. i had to *really* torque the set screw that spreads the nylon base, else the device would not seat on the bolt head and not eject.

a good idea and a useful tool, but for the money charged i expected a much better product.