My brother is getting 3000 fps in his 32" barrel with 118gr H870 at 4.1" OAL using the 300gr SMK. His is shooting very well at this load, it was run up to 120gr but accuracy was better at the 118gr load.
Welcome to the LR hunting forum. Tell us about your rifle there, sounds sweet!
This load, in his rifle, was right at 65k psi on the Oehler 43.