In the older Layman loading manuals they list a fair amount of data for cast bullets. They do not list any powders nearly as slow as 4320. I have a burn rate chart that list 4320 as number 109 on it. The slowest powder that the Layman Manual list for the 173 grn. gas checked bullet is 4756, and they have that powder listed at number 45. The fastest load they list is 11.5 grns. of Hero at 1538 fps. Starting load for Hero is 9 grns. Layman manual no.45 has data for 700X, PB.. SR-7625, SR-4756,Red Dot, Unique, Green Dot, and Herco. Velosity ranges from abt. 1,100 fps to 1,568 fps. If you can`t find data any where drop me a PM and I`ll PM what I have to you.
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Catfish
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