This could be on account of a special challenge also. Do you utilize a flashhole deburring Software and open up up the flash gap excessive permitting additional stress back again in to the primer cup area? Not a huge variation however it does make a variance depending on the situation https://z-ndh-tchen-small-rifle46790.blogolize.com/facts-about-federal-large-rifle-zündhütchen-revealed-70796666