Quote:
Originally Posted by walnutred
And sometimes the same powder charge actually works in multiple calibers. 3.5 gns if BE is my plinking load for cast bullets in 9x19, 9x18 and 38 Special. Different weight bullets of course but they shoot pretty much to point of aim in fixed sight handguns.
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Yes, and 4.4gr Titegroup appears in charts for 9mm, .40 S&W, .38Spl, and .45 ACP, just among the cartridges I routinely load, and several others I don't.
Posts like the OP's concern me, especially requests for general rules of thumb for similar powders. The science of internal ballistics is not only more complicated than most understand, it is more complicated than most CAN understand, unless educated in the world of second and third-order differential calculus.
https://www.rand.org/content/dam/ran...2008/P4466.pdf