As others have stated staying supersonic is the critical part. I use to shoot LR a good bit with an M1A and 175 SMKs so they will perform.
If you need zeros I always found the "thermometer" target works very well not only for elevation but to make sure your windage tracks as the sight goes up. You don't want to be that guy who fires immediately as they give the command so he can gauge his windage by which target goes down. If you need it I can get the official name of the target.
I would not be surprised if you didn't have to file some on your front sight to get the elevation you need.