If you like the 22 ther is no need to change. Yes there is a big difference in these two. The 17 hmr is truley a 100 yard squirrel gun took one last week at 80 yards off hand held between the eyes too him in the nose. At close range it is devastaing I was using the cci 17gr hollow points at at twenty five hards it would take half the head off. Now tommorrow when I go out I will take the 22 just enjoy using something different.