I'm attempting to seat 375 HH AccuBond bullets using an RCBS standard seating die. The die leaves a ring on the bullet. I've also had this issue with 30.06 Springfield bullets. Any suggestions other than having RCBS make custom seating plugs? Which die sets work best with AccuBond bullets? The following is the RCBS response: "This bullet has a long profile. The seat plug seats to the ogive and the profile isn't fitting the seat plug. We do make special order plugs. If you have the ability to deepen the plug, it should work for your bullet."