I exclusively use this tool for trimming 556/223 brass. every case comes out exact 1.7485 with little effort. I love it. only complaint , and it may be user error?? but my case necks take way to much pressure , say 8/10 times when attempting to trim. sometime the case will slide right on the guide and up to the blades. I thought it may have been from off center flas holes stopping the guide rod but that was only the case on some. I set my headspace to .002 smaller than my chamber so an adjustment there to change neck tension is out of the question.
should I ease .0005 of the guide rod with sand paper or something to ease the tight fit Into the necks or is something else at play here? like I said sometimes it slips right on no problem. I clean and lube when needed, and not excessively. Any suggestion? my palms are bruised lol!!!!