I'm going to give Bruce's original question a shot. First, what exactly is the load you took from the Hodgdon book? No load from the "book" should have the results Bruce described unless there is another factor involved. The factors I suspect are tipped wads, bad powder or primers, or air space in the hull. It is very possible to have a good looking crimp and still have air space in the hull, expecially with 3/4 ounce loads. RST shells are loaded for good cold weather performance and low pressure for vintage guns. The RST factory loads will not be as clean in the bore as "big three" loads that may be loaded up to SAAMI maximums. RST picks powders that give good cold weather performance at low, vintage gun, pressures. On the old forum, I listed some RST loads that were of extremely low pressures but gave good sound and performance at the target, fresh out of the freezer.
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