I am new to reloading and have been having some very good results with my 204 and rl10x powder with 39gr sierra blitzkings.
However my best load which is grouping a three shot group at .25" cntr @ 100yards is a max load according to sierra data. I went out tonight to try three different loads experimenting with seating depth and not sure if I'm getting pressure signs or not!
All my primers are flat and filled in pockets and ive had one damaged and marked primer from the last batch of nine. Also all of my Norma brass have an expansion ring appear near the head after firing weather it be a light or max load. These don't seem to be as bad on hornady cases.
Ive atrached photos, any thoughts appreciated?