At range conditions whay would most of you consider a good or "safe" grouping for a handgun at about 20-30' under a repetitive fire routine. I am doing about a 4" grouping using a revolver. I consider this to be pretty good, or safe meaning I am hitting the target without stray bullets. Not being an expert marksman I am content. My main focus is to hit the target and minimize stray bullets as I use a .357. What do they teach you in LEO school?