i went of the scemahtics of a real king tiger tank, i inluded some of the things that you drew on to it.. but you said King tiger tank turret. don't believe me.. here is the cross sections i used. the only major diffrences is the barrel length and the general smoothness (which in turn contributes to shape.) i made it more planed instead of smoothed.
My design wasn't exactly like the real Tiger. I did mention it's a bit changed. It's a bit longer, has a lower profile, has more angled sides, and has a more noticable slide down from the middle to the front. Btw. make those barrel attachments similiar to the real Tiger, the inwards-arched cone looks cooler IMO. The barrels should be just a tiny bit longer, too. But otherwise, good work so far.