Zero in the Model 17, the .22 barely moves it.. In .38 Spl., there is very little recoil with the Model 14-3 I own. My Dan Wesson 15-2 is a brute with the 8” VH barrel, it is almost too much of a good thing. With the bigger magnums, there is obviously going to be more recoil. But the guns are so nose-heavy that muzzle flip isn’t as great as with the 4” versions. Stay safe.