Try it let us know. I spent a month last fall shooting 200 yards in preparation for a hunt to NW Oklahoma. My "pet" load is 130 gr Pyrodex and 250 gr Barnes Expander out of my Knight Extreme. I can consistently group 1" or under at 100 yards and have done it at 200. I can consistently group 1 1/2-2" at 200. I am considering trying a heavier bullet (300 gr Expander or SST)this year, but I really hate to quit on a load that has preformed flawlessly for me.