ABBOBERG,
I agree with you when you say, "I personally believe rectangular size is more honest," (than slide length).
I am listing all pistols in "Overall Length", which I believe is what you refer to as "rectangular size". If you will notice the attachment of the excerpt from Kahr's 2005 catalog, you will see that they use the term "Length OA" which I assumed, maybe wrongly, meant "Length OverAll". Maybe it is actually slide length, but if so, what does "OA" mean? Possibly they made a mistake in terms in their catalog.
Also, I assume, again maybe wrongly, that Height refers to "Overall" or "Rectangular" height including standard sights, magazine releases as in the Rohrgaugh, and any other protuberances.
As far as Width is concerned, some manufacturers list "slide width" and some list "overall width". I don't think this is quite as important in most cases, because the difference is generally insignificant.
I also think "Loaded Weight" would be more honest and realistic than "Empty Weight", but that's what most manufacturers use. Maybe they think it fools us into thinking their guns are lighter (and shorter), when in reality all it does is make them appear dishonest.
Who carries a gun, especially a CW "unloaded" anyway?
I know you can't get a really accurate loaded weight due to different weights in rounds, but they could give an approximate weight using "standard" ball ammo. A few grains here or there would not be significant when considering how much weight you would be really carrying in your pocket. But a fully loaded magazine and one in the chamber as most CW's are carried is significant additional weight. Especially the weight of the magazine plus 10+1 of 9mm as in the Kel-Tec P-11, or even 5+1 of 40 S&W as in the Kahr!
I certainly would like the chart to be as accurate as possible. I have relied on manufacturers' information for everything I have published in the chart. If their information is in error or incomplete, then I will have to rely on folks like you to fill in the gaps and correct the errors.
I thank you for pursuing this. I will update the chart to reflect your information. I will add something to the "Notes" in the chart to show the discrepancy in the Kahrs.