by going 3 firings before touching the shoulder, you gave your cases plenty of time to fully expand and headspace off the shoulder vice the belt. you shouldn't have any issues.
imo, you have too much clothing.
rolling into season 4 in CO with the same stuff
merino beanie - only for sleeping
ball cap
lightweight (120) merino hoodie
mid weight merino hoodie
puffy jacket
rain jacket
uninsulated sitka pants
gaiters
merino boxer briefs and socks, ideally a fresh pair...