Im curious if there is any consensus on what case mouth sooting is an indicator of (usually low pressure) and wether its worth taking any note of.
I loaded some 30-06 yesterday. A dozen 130g and a dozen 180g. I started incorrectly as I often do well above the minimum charge weight, and it was only in the top end and beyond the book limit that I saw the beginning of flattened ( ot cratered) primers and clean necks.
In the middle range weights where I started, sooting was very factory like.
Is there anything to learn from this or is it just one of things. Part and parcel of reloading?