Big Redhead,

I dunno about that. Cartridge brass is pretty flexible when new, and cases vary considerably in head "height."

Some people with .30 Newtons have fired belted brass in them for years. The case in front of the belt flattens out, which in theory should weaken the case. But so far as I know, nobody has died as a result.

All I know is that if I HADN'T tried to size an '06-based case in a .240 die, then some reader would have written in to the magazine, pointing out the error of my ways. You wouldn't believe how many nitpicking gun-magazine readers exist in the world. Or maybe you would.

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John Steinbeck