I will try both R17/H4350 , maybe R16, and see which one shoots the best. I will just have to go ahead and work up some loads now as its getting warmer. I will them test test them in hot summertime, early September. I dont' like having a "summer time/winter time load of different charges with the same bullet... that gives me an excuse to 'try another bullet", ha, I love handloading as much as hunting.