[Elecraft] How much rejection should I expect?

[Allen Brier N5XZ]

I have a neighbor on the next street...our antennas are only about 800 feet apart (according to Google maps). I know he doesn't run 1500 watts (luckily) but I think he does run 300 - 400 or so. My question is, how much receiver rejection and/or overload should I expect? He pretty much tears up the entire band on my K3 if my antenna is pointed his way, but not quite so bad on the side. On my P3, the entire noise floor is raised many S units (I'll have to switch to dB and see what it looks like.

Should I expect better, or is this to be expected. I know I haven't provided any real details, but I think many will get the idea.

Unfortunately, we're both primarily CW ops!

Allen N5XZ K3 #2324