The last 2 trips I took my temp gun. Fired one factory round to verify zero of the scope, took the temp and used that for the "cool down" temp. 67 the first day, 74 the next. After 5 shots i was at 110ish depending on where I pulled the temp. The chamber temp was cooler than part of the barrel I used for a baseline.
I have 10 empty cases left from my first 1x fired batch. Going to load them up at 2.875. Either shoot 2 5 round groups or shoot all 10 but let the barrel cool every 3 rounds.
