I was out shooting in my pdog patch using a Savage 17hmr with 17gr Hornadys and 20 gr Remingtons. I was noticing that the 17grn rounds were ripping through the gopher and not causing much damage. The 40gr rounds were flippin g them up and over. I was using my lever Henry with Yellow Jackets to. All In all the Yellow Jackets casue as much or more damage than the 17hmrs. reasearch will continue 