This looks to me like the perfect solution, no pun intended. However I am concerned about the temperature. Here's a quote from an article on this site.
http://www.6mmbr.com/annealing.html
"The critical time and temperature at which the grain structure reforms into something suitable for case necks is 662 degrees (F) for some 15 minutes. A higher temperature, say from 750 to 800 degrees, will do the same job in a few seconds. If brass is allowed to reach temperatures higher than this (regardless of the time), it will be made irretrievably and irrevocably too soft."
900F will not ruin brass in a few seconds.