Feels an awful lot like agist virtue signaling. Maybe I missed the part where you shared aspects of any interesting discussion with your fellow shooter? Could you not have asked if the shooter had tried anything before his new rifle? Could you not have shared respect for your fellow shooter by supporting the virtues of his cartridge? Could you not have offered to let the new shooter take a few shots with your rifle which obviously would have been a unique experience he might otherwise never have opportunity to take?