I just got a box of HH 131's to load in my 280 AI. I took the Nosler loading data for 140grn, the only powder I have that was on the chart was H4831SC the starting load listed was 58.5 grn and the max load was 62.5. I loaded in .5 grn increments from 58.5 to 64.0. Attached is a pic of the primer of the 58.5 and the 64.0, actually all the fired round primers looks just like these. Am I wrong are these primers showing pressure signs right from the first round? Sorry the pictures don't really show the detail on the screen, there are concentric lines going out from the center to the edge of the primer.