Re: First batch of clean brass - I'm impressed
A couple of things:
The residue inside the cases is mostly carbon and it acts as a lubricant when you size and bell the cases and seat the bullets. If you remove it all then you may have to resort to NECO internal neck lube graphite to size the cases without too much force and to avoid the bullets collapsing the wall of the case as the bullets are seated.
Don't over heat brass cases as you effect their temper and strength. The case head is especially important to keep from over heating as it is the strength of the case. If its strength is destroyed by the heat then so may your gun and you when you fire one of these weakened cases. I think if you insist on using a liquid media then you need to let the cases air dry after removing most of the trapped water by shaking the case. It might take a day or even two to be sure the interior of the cases are completely free of moisture. This is the main reason I do not like any cleaning process that includes water. I take my cases from the vibrational cleaner tub directly to the reloading bench. No waiting.