First post here and thanks in advance for the input. Relatively new to CB's with a new RCBS 9mm 147 grain fn (.356). Loaded with AA No.7@5.5 gr, and seated flush to the last lands an am getting some shaving and build up at the bullet seat in the barrel. Hesitant to seat deeper because I can start to see pressure signs on the primer. Anyone else use this combo and have similar issues or have any suggestions?