I loaded up some new star line brassw/3.1 BE and 85gr HP and see that the primer expands out into the recessed zone of the p. pocket. It surely is not a high pressure load in a 331, but do you think it is just due to the sort of inletted depression of starline pocket? this is only brass I have and haven't tried them yet in my M16

I loaded up some new star line brassw/3.1 BE and 85gr HP and see that the primer expands out into the recessed zone of the p. pocket. It surely is not a high pressure load in a 331, but do you think it is just due to the sort of inletted depression of starline pocket? this is only brass I have and haven't tried them yet in my M16