The Federal loads I was shooting were 1502630 fps. I can try the core-lokts next time. What would be some good suggestions for a folding leaf rear? I would prefer current production. The one that comes up when I google "Savage 99 folding rear sight" is the one from numrich.SAVAGE 60 99 110 170 Folding Leaf Rear Sight https://www.amazon.com/dp/B008D56Q8Y/ref=cm_sw_r_cp_api_ibHpzb1J5Q0MN. I am REALLY green with this type of thing so I am learning as I go.