They don't work in every rifle. I have a 6.5 PRC and nope. Won't shoot the 124's.Happens. Great bullets. More than one example of Hammers shooting in a finicky rifle. They shoot, and they kill. mtmuley
And I have a 7mm rem mag that will not shoot the 143 HH or the 150 shock hammers. And I find seating depth is also important with hammers. All be it maybe not quit as picky as others but it does take some messing around. At least they did in 5 of my rifles. Could not get them to shoot in my sons 300 win mag either. In my rifles that they do work they work very good.