I shot the Hornady 350 grain bullets.I started out with 150 grains of powder the group was around 12 inches. Then I dropped down to 120 grains and groups came down to around 6 inches. After that it got too hard to load them.The first one I loaded went in easy and smooth,the second one got tough,every shot after got worse.I am not going to clean my gun after every shot, so I will stay with the 250 grain shock wave.They load the same on the 15th shot as they did the first load .Plus the groups are less than 2 inches at 100 yards.