..I was reloading for my .300 Remingtone ulta mag..I have fired new brass one time..So now I'm full length sizeing the once fired brass..And..I must have gotten lube on the shoulder..So I put some small dents in the shoulder area of a few cases..I also checked the vent hole on the RCBS Die and it was clear...I took the die apart and cleaned it..After putting the die back together and making sure the shoulder area of the case is free of any lube I had 100 percent improvment..SO..for the question..Can I still load the brass and shoot?..Will I lose pressure? or velocity?..As you read this you probably realize that how new I am to loading..oh..It didn't move the shoulder area at all just alot of dents..Thanks in advance ...Carl