my indoor range won't allow it, they say it dents the back stop, and causes ricochets. i have heard some outdoor ranges don't allow, because of fire hazard. which sounds like a one in a million to me, but i wish there was an outdoor range around here that would allow it.
Mainly it's so they can sell you their Winchester "metric calibers" ammo for ~$1/round. It's really funny when they ban surplus 7.62x54R because it's steel core, and then give you the Win stuff to shoot, which is also steel core.