Winchester StaBall 6.5 Ball Powder

[Starlite]

Yes I use Tac in my 223 when you couldn't buy anything and found it shoots quite well. Same with Superformance powder.

I think this is superformance as an "extreme" (Like Varget/H322/H4350etc powder. Hence the name I'd guess. I have no proof of this other then I'm getting better SDs and similar velocity; which is pretty weak evidence too. Regardles, I love this powder. Burns clean for me in my 6.5 CMs (Finnlight and Bergara B-14)