Is there a case that can be formed into 9.3x62 to save a little cash?

35Whelen,30-06 very carefully 280Rem {leaves a thin neck tho}

Try some graf brass if you are on a tight budget - www.grafs.com.

You can make it out of '06, whelen cases, however, it is generally not a good idea because a 9.3x62 is actually a slightly rebated rim and is thus a slightly larger head diameter than the '06-based cases.

Also, you could just buy 20 pieces of Lapua of Norma brass - they will last you a LONG time, I have been getting amazing case life out of these two brands.

Good luck...

Spring for the Lapua brass and forget the economy. I haven't shot any Graf's brass(Hornaday) but it should be good. The Graf's lady once remarked the Lapua was better than the Norma.