Western burn rate chart shows BLc2 has a similar burn rate to Winchester 748 (on the same line). Speer has data for their 140 grain hot core bullet in 6.5 Grendel using Winchester 748. The Grendel II chamber has a long throat so the 140 grain Hornady might shoot decent in that barrel.
Winchester 748 Federal case, Federal 205 primer start 25.7 C 2089, max load 28.6 C 2338. The hot core bullet is pretty short flat based bullet and Speer list the C.O.A.L. at 2.140.
Winchester 748 Federal case, Federal 205 primer start 25.7 C 2089, max load 28.6 C 2338. The hot core bullet is pretty short flat based bullet and Speer list the C.O.A.L. at 2.140.