I checked Alliant's website and their max is below what you are running so the Hornady data might be a true max. Some powders will leave unburnt flakes and you might just have to live with it with the 155's. The range floor used to have so much left over 296 from when I ran it with 125's in 357mag that the floor would be slippery and it was truly at a max load.
Drugs are bad because if you do drugs you're a hippie and hippies suck.
"If you kill enough of them, they stop fighting."-General Curtis E. LeMay