I just slugged my son-in-laws .40 S&W Glock and found out it is actually .4012 with a recommendation to size CB at .403. I do not find a .403 mold nor do I find a .403 sizing die. I have a Lee .401 push through sizing die and a 401-145swc mold. At this time I am planning to powder coat the bullets to increase their size. I understand Glocks are notorious for barrel leading when an undersized bullet is fired. so, I still do not know what to do about sizing them to .403. I've read about using a very fine sand paper on a dowel and enlarging the sizing die and I suppose I could send the die off to have it reamed, what other options do I have? Am I in trouble?