Kahr K40 range report + WTH is this?

[19-3Ben]

I bought a very slightly used Kahr K40 last week for $417. I was very excited.
Based on what I had read about the K40, I was also very nervous about a) having a reliability problem, and b) harsh recoil.
Turns out neither of which was a legitimate concern. I went to the range today. It was FREEZING outside. 24 degrees, with a windchill that cut that down in half (at least). I was totally not dressed appropriately for such cold. Before I got too terribly uncomfortable, I fired off 100 rounds of Blazer Brass, and 20 rounds of Federal Hydrashok. Every round fed and fired perfectly. No problems at all.
I was very sorry that I was so cold because I could tell it was impacting my accuracy. My hands were frozen, trigger finger totally numb, and i was shaking. Oh, and the range only has stands at 25yards for pistol. no closer than 25 yards. Needless to say, my groups looked like shotgun patterns. But at least I know the thing works!!!

Now the real question. I have some pics of the brass below. Why on earth is the gun doing this to the brass? This was all brand new brass. What's going on here? Two of the five pictured rounds are nickel (from the hydrashok) and the other three are from the Blazer Brass.

 

[The Lone Haranguer]

Kahrs do tend to do that. I believe the case may be hitting the lower side of the ejection port before it throws clear. An E9 I purchased in 1998 (I no longer have it for unrelated reasons) did it to an equal degree to yours, as well as having an erratic ejection pattern - some cases would fly almost straight up like a pop-fly baseball while an occasional one came back at my head. I commented on it and they said they would lower the ejection port, which they did. This cured both problems. The PM9 I still have will make a slight ding or nick in the case mouth. BUT - I would not do anything to it as long as the cases are ejecting cleanly and consistently away from you. It is not at all harmful, except to the cases if you wish to reload them.

 

[dogtown tom]

Denting the case mouth isn't strictly a Kahr issue....my first 1911 did so with regularity.

 

[19-3Ben]

I actually just had a friend tell me pretty much exactly what Lone Haranguer said. He said that because it's a high speed slide and ejection speedwithout scalloped ejection port. The cases are ejecting at high speed and banging into the ejection port on the way out.

It causes me no problems so far. No brass hit me, or got in the way at all. I guess I'll just leave it as it. Why bother to fix what ain't broke?

Thanks so much for chiming in, and good detective work there!

 

[The Lone Haranguer]

Denting the case mouth isn't strictly a Kahr issue....my first 1911 did so with regularity.

Quite true, with the original style ejection port. It is a little harder to understand with a Kahr, which has a large ejection port relative to the size of the case, though.