Just for kicks, I ran the OP's load through QuickLoad at 70F.
22" barrel
42 grains of RL17
143 gr eldx
2.825 COAL
QL predicts a chamber pressure of 60,991 psi. Max is 63,091 psi. Velocity of 2789 fps.
If bullet is actually into the lands, shot start pressure could increase by as much as 7,200...