What do you consider good "placement" of your shots? Meaning distance to target group size etc.?
I can tell you that 800 rnds is usually just on the other side of getting a new pistol "broken in". It will take many more than 800 to start seeing improvement. Training will speed this up tremendously.
Despite what some people think, shooting is not intuitive. In fact it is rather counter intuitive for a person to hold an explosion in their hand and not take cover.It is a learned skill that fades very quickly without "good" practice. Movies have led some to believe they can simply pick up a pistol and shoot a bad guy in the arm, leg, or shoot the gun out of the perps hand at 50 yrds and that just ain't so.
You are wise to seek more skill, so don't be afraid to learn good habits from a profesional.