Long range does mean a different thing to different shooter and different chamberings and different sights...
For 22LR open sight shooting long range for some might be 100 to 150m... centrefire I have a hard time acquiring a target with the eye at 300m or over, so for me over 300 is starting to be a bit long in the range.
For pistol chamberings with more drop longer/is shorter.
For standard/mag rifle chambering personally I consider when 500+ scoped is the limit where it starts getting l-o-n-g , while supermags, 1000+??
This is my take, everyone has their own opinion
I'm sure you've made a good choice there headspace, enjoy.