I looked very closely into the 6 that I shot and noticed grey and black bubble spots inside 3 of them, this could be corrosion. The powder burned clean though, as the fired cases inside were cleaner than some of the reloaded commerical brass using 4895 powder that I have shot in the past.
I will throw the fired cases away after shooting them. As I have a long history of shooting old bolt actions and black powder muzzleloaders, I did/will clean after shooting with the old GI bore cleaner, then really good with Hoppes #9.
I shot and reloaded 7.7 and 6.5 Jap for many years and the brass was expensive. That is why I hate to toss out any reloadable cartridge cases, however, you guys are right, 30-06 is really common, not in the same league as NORMA stuff costwise. :-)
Thanks for the input.