The higher the impact speed of C&C bullets, the less predictable their terminal performance tends to be. Which is why heavy, high-SD C&C bullets launched from standard-velocity cartridges tend to work quite well. I try to stick with a sub-3000 fps launch speed, but 2700-2800 fps may be even better for C&C terminal repeatability. With monos, it seems to be the opposite.
Maybe not gospel, but I tend to stick with that. Nosler Ballistic Tips seem a touch beefier and can be fine a little higher, but I still don't try to hurt them with speed most of the time.
