Thanks guys! I appreciate the insight.
The guns are 1911s that start to show leading near the chamber after about 200 rounds-- at least enough to warrant a cleaning. Nothing serious, just enough to make me need to clean it out with bronze wool. The bullets are hard-lubed, hard cast, bevel-based 200 grain SWCs. I think I'll give the liquid alox trick a try. I still do have the lube-sizer, but don't really want to do that much work because we're talking thousands of bullets at a time. I never had the problem when using swaged bullets, but Star went out of business and I can't get swaged bullets at a good price anymore. The swaged bullets were coated with a waxy lube. They were also softer and without a bevelled base.