I have had a Hawkeye for many years….the sole reason was to check the transition from chamber to rifling after my chambering work. Sometimes no amount of careful planning ends up without burrs.
I bought the Teslong because it was cheap and it had the flexible probe…will be buying the rigid probe and 5" screen version shortly.
This is so I can use it in the field, something I cannot do with the Hawkeye.
I like to check my barrels after I clean them…it has never changed the frequency at which I clean, but tells me if what I am doing is working.
Cheers.