Re: hodgdon superperformance powder
I've used the Superformance in my 30-280 Ackley Improved. While it pushed the bullet out the barrel just fine, there are other powders that work better in this particular cartridge for me.
A call to Hodgdon's and speaking with a tech indicated that this powder they are marketing has a narrow window that it works great in.
Hornady has around 40 different blends of this Superformance powder. Hodgdon chose to come to market with just one of them.
It may work good in certain cases, and not so good in other cases.
In my 30-280 AI, H4831, H4350, Varget all work better in terms of accuracy and velocity.
Hodgdon's told me it was slightly slower burn speed than H4831. In spite of that, it hit pressure way before H4831 does in my 30-280AI.