Those bullets are Buffalo's version of the Hornady XTP & Speer Gold Dot HPs. I have read nothing about their game harvest performances. The Pyrodex P is the overallbest powder Pyrodex sells. You can safely use it in any caliber from 32 to 58 -- great with inlines & sidehammer flintlocks or percussions. The major complaint with Pyrodex is it's #1 ranking for corrosiveness.