9.3x62 Mauser is popular for sure, it gets the job done and has been around for 100 yrs+. We have all types of new cartridges that have been developed that cover similar territory. I’ve always wondered why the 376 Steyr never became more popular being slightly more powerful than the 9.3 and slightly less than the 375 H&H. The case is a very efficient design and produces some great ballistics. Guess it just never caught on plus Hornady has a habit of abandoning some of its creations regarding brass.