11-18-2016, 06:50 PM
It's a Grendel SAAMI chamber or its 264 LBC, Grendel II, etc. Any but the Grendel SAAMI chamber may use Grendel bolts or the .125 face depth bolts depending on how the manufacturer headspaced the chamber. Type I and Type II is an artificial construct started by Black Hole to distinguish between the .125 (Type I) and the .136 (SAAMI Grendel or Type II) in their nomenclature.
You seek escape from pain. We seek the achievement of happiness. You exist for the sake of avoiding punishment. We exist for the sake of earning rewards. Threats will not make us function; fear is not our incentive. It is not death that we wish to avoid, but life that we wish to live. - John Galt