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Interested to hear of this. I had discounted the option of using a chamber reamer for a home-made bullet comparator, my thinking being that the edge of the ring of contact on a gauge should be as...

Just a note on the above, #69: threaded "modified" cases are for the OAL gauge, a measurement that M. Cortina is at pains to emphasize is not required for his method. The stock photo I posted is...

Even with a micrometer die adjustment you still have to deal with the contact point of the seating stem being some way up the ogive from where the bullet will make contact with the rifling, and the...

With the neck tension, bullets, and chamber leades where I've tried this, there has been 1mm of base-to-ogive difference in length between jammed and just touching. Backing off 20 thou (0.5mm) from...