1. Mine show a line there, but I always thought that was just the boundary between the part of the cases that gets re-sized, and the head area that really doesn't. But I could be wrong...
2. I tumble for 2-4 hours after shooting, and half-hour to an hour after resizing, to remove case lube. I have occasionally forgot and left them in overnight. Posted in a panic about it, and was reassured that you really can't 'over-tumble' the brass. I just don't seem to see much additional benefit after 2-4 hours. My necks are never as clean as the bodies, either.
3. ??
4. Pistol brass generally does not need to be trimmed. Rifle brass, I measure after 3-4 shootings, and generally have to trim a bit off a few at that time. This is for .308, .223 and .17 centerfire. Bigger calibers may need measuring more often? I dunno.
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I am Pro-Rights (on gun issues).
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