I have a Ruger 77 ts 257AI. It works well with 100 gr Hornady sp,s , and I have killed a bunch of deer with them. I have tried to work up an accurate load with the Hornady 120 gr HP, and occasionally get good groups, but overall not to my standards. I decided to try 117's as they are shorter, and I had some 117 gr Sierra FB and BT's on hand. I have only tried one load but I can see the 117 gr SFB has great potential. Has anyone else experienced this same issue and what were your findings. Thanks in advance, Barlow