They shot pretty decent out of my 24" X-Caliber (Savage Prefit). Pretty reliably 0.9-1.1 MOA (statistically significant group sizes and number of groups).
24", 1:8 twist
~3250-3275 fps
~66-67 gr of Retumbo
I loaded them for a buddy who wanted to borrow my rifle, but who's against lead bullets. He flattened a white tail at about 90 yards with one. He sent me a picture of the blood "trail", and it looked like something out of a horror movie. Deer death sprinted about 40 yards, and lost about 40 quarts...
Im going to give the 127 LRX and the 156 Berger a try see which ones shot the best. My barrel is a 1.75 twist. I have a PRC also that shots 140 grn bullets at 3100 fps so im looking at doing so real world fps comparing.