Screwbolts

Thank you for your reply. I will give the 'C' drill a try, if it is necessary, to be able to close the breech with an O-ring in the primer pocket. Installing a 3/8 bolt in the breech plug and milling a new smooth primer pocket interests me, but i don't think it would work in either the Accura or the Omega. To me, it doesn't seem possible to get a socket on the bolt and into the barrel of either rifle. The socket, if my brain is working correctly, won't fit into the opening in the barrel which receives the breech plug. These breech plugs aren't so very expensive, so using the O-ring to slow the flame erosion, then after the erosion is too much, replacing the breech plug may be the way to go. Thanks again.