I have been searching for the trim length and max length of the 6.5 Saum case. The best I can find is that it's the same as the 7 Saum. Just want to make sure that this correct.
The GAP stands for GA Precision, who originally made the cartridge famous during owner of GA Precision, George Gardner's use of the caliber during professional competition rifle shooting in 2012.
www.loaddevelopment.com
Looks like 2.0012". I looked in my load book and realized I haven't had to trim cases yet, so nothing other than this.
I haven't had any luck with that Sinclair tool, so I just use book size.