Linko
Silver $$ Contributor
I would like to have a consistent measurement of my seating depth.
I use a Mitutoyo caliper with Hornady comparator tool and Sinclair insert.
I use this setup and can get just about any measurement I want by wiggling the base to ensure it is seated flat on the anvil.
Here are two examples of the same loaded round. This is a 6 Dasher with a Barts bullet
I am sure it operator affected. If I sort loaded cartridges using this caliper setup and I have them in a reloading tray and repeat the measurements I will be jumping the cartridges back and forth from short to long.Nuts!
Is a hard jam in the comparator insert a better method of doing this. Or is there a better way to measure BTO consistently?
I use the Innovative Technologies tool for shoulder bump/headspace. Rotating the cartridge on the base yields a steady measurement. I do the same with the caliper setup and it’s not consistent

I use a Mitutoyo caliper with Hornady comparator tool and Sinclair insert.
I use this setup and can get just about any measurement I want by wiggling the base to ensure it is seated flat on the anvil.
Here are two examples of the same loaded round. This is a 6 Dasher with a Barts bullet
I am sure it operator affected. If I sort loaded cartridges using this caliper setup and I have them in a reloading tray and repeat the measurements I will be jumping the cartridges back and forth from short to long.Nuts!
Is a hard jam in the comparator insert a better method of doing this. Or is there a better way to measure BTO consistently?
I use the Innovative Technologies tool for shoulder bump/headspace. Rotating the cartridge on the base yields a steady measurement. I do the same with the caliper setup and it’s not consistent
