by rc42 » 24 May 2021, 9:54 am
This is going to become more common as this shortage continues, we will likely all have to develop new loads using whatever powder is available.
357 Sig is a less common round so factory ammunition will run out first for that but other calibers will follow.
Your figures look reasonable but I'd suggest not trying to reach power factor with faster powder and keep the load down to what is needed for correct cycling.
I would also suggest sending an email to ADI with those figures and ask them for their comments, if nothing else it will highlight to them the difficulties that reloaders are starting to have in Australia.