I have been using them for the last year or so in both the 6.5x55 and the 6.5 Jap. They work well from both guns on the few deer shot with them. High speed, low recoil, good groups. I have not recoverd one from deer and trails from DRT to 20 yards or so. I do not see how they would not work well in the .260 and you can use the 100 grain BT's for less expensive practice ammo. They hit within an inch of the partition groups from both guns for me.
