I was talking about the relevance of reading primers in another thread and found that the .475 Linebaugh uses WLP primers at max pressure of 49K psi in the latest ACCURATE load data. I am still perplexed at how we are supposed to read primers for signs of pressure. If I was using WLP primers, unless I have a head space issue, I think these primer pressure signs would be indicating mid 50s K psi.? ? ? Wanna kill these ads? We can help!