I ran 130TTSX at 3560fps(77g R17, R+P case, 215GMM) for a couple years in my T3 300WM. It was similar in trajectory to my 257Wbys with 100s at 3700ish. It's definitely a good whitetail load, but deer run quite a ways with sparse blood trails if you hit purely lung/ribs(My experience with TTSX in most carts). It's a good combo and bone is your friend if you don't mind wasting a little shoulder meat.