Originally Posted by dla

I don't think 28grs is going to damage anything, but if you are shooting 27grs with 405gr fodder why would you decide to start at 28grs with 500gr pills?

Maybe you should get ahold of a manual or at least do some more research. Btw, is H4198 all you've got? Because a lot of Quigley Down Under loads were done with different powders.