Originally Posted By: Chuckster
Just for fun, using Vall's numbers, it would take about four turns of the collar to seat the barrel. Probably some overlap.
Neat system. Looks similar to a Morse taper.
Chuck


My thoughts were the same Chuck. It does look like a typical Morse taper. Each half of the threaded sections is about 3/4" of threads, so it's quite a few turns to get the barrel seated or separated.