There's a company here in Canada that has sold hundreds of 9.3s over the years with lots of loading kit support. They are a very good dealer overall and have done much to ignite 9.3 interest here in Canada.
https://www.tradeexcanada.com/They supply in-the-white Zastava M98 bbls for 9.3x62 for $169 CDN which is a mere $123 US
https://www.tradeexcanada.com/content/mauser-m98-barrel-zastava-93x62.