Is it possible to measure just neck length from neck shoulder junction?I have used Giraud Trimmers for years with no complaints. Recently, I decided to buy a dedicated trimmer. Henderson was the winner for a couple of reasons.
1) I do some "wildcat" cartridges that may require 2x-3x firings before the cartridge is fully fire-formed. The Henderson unit sets the trim length from base of case to case mouth (OAL). The Giraud unit indexes off the shoulder. Henderson unit will consistently trim to target OAL without being impacted by any change to the shoulder location (variations in bumping or forming). Giraud will always give a consistent trim length from shoulder to case mouth, which may lead to different OAL based on variances in shoulder location. For me, Henderson is more flexible.
2) I load for a dozen different cartridges. The cost was significantly less to cover all of these cartridges using the Henderson unit.
3) Potential Upside - At the time I bought my unit, Henderson was planning on developing their trimming unit to also serve as a neck turning lathe. Not sure if there has been any advancement in the upgrade. IF they are successful in designing/implementing then it is a game changer...
As Bill K indicated... a dedicated high-end trimmer is not necessary. By all means It is a luxury item... that admittedly makes me smile whenever I use it. I don't miss hand cramps from holding cases during case prep..
Both have their own set of problems.The Henderson Trimmer calibrates off the entire case length. You set the cutting depth based on the OAL of the case that you desire.
The Giraud Trimmer is calibrated off of the location of the shoulder. This is completely independent of the placement of the shoulder or OAL.
If you consistently resize your brass (i.e. the shoulder is in proper location) then both machines get you to the same place with the neck length and OAL being the same... But this is a big "If". People have different opinions as you can see throughout this thread.