Thread: A couple of new toys comp seating die and Comparator for Measuring sholder bump etc

[QUOTE=the hornady Comparator set when useing to messure Cartridge bass to ojive
It’s giving me strange measurements like 3 or 4 different measurements for the same cartridge

If i messure coal they are the same within reson

Can anyone in lighten me where ive fucked up 😂[/QUOTE]

A couple of things I've found along the way.

Close the jaws down to your zero point and hold up to a light source to see if they a clamping down square onto the comparator e.g. no light between top jaw and comp head.

when assembling on to the calipers have all locking screws loose and tighten down while holding the jaws lightly closed at the zero point.

The other thing to check is that your primers are not sticking up proud of the cartridge base.