I can't tell you the FPS in your rifle (or mine) but I wanted to add that they are becoming my favorite in my D350. I have to work with them a little more, It got REALLY cold around here.I was surprised at the accuracy and my Magnum rifle seems to push them pretty good.I can tell by the shot cycle that they are going slower. LOL! The recoil seems a little different.It seems to take the edge off of the violent recoil of the D350.And to add, I thought that if the 21g Barracuda works, then why not try the Gamo TS-22. I did that because I could buy them at my local sporting good store.I think that I might like them also.