Whilst waiting for a reply from Sir Spruce/CTF about his Spruce King .458 WM,
here is 20"-barreled Ruger M77 .458 WM belonging to Gustavo from ardotcom (someone tell him to flee there and relocate here):

[Linked Image]

[Linked Image]

[Linked Image]

[Linked Image]

The 400-grain Woodleigh PPSN and HYDRO might be knocking onthe door of 2500 fps MV even in a 20"-barreled .458 WM+.
3.395" COL works in those Ruger M77 magazine rifles:

[Linked Image]

400-gr Woodleigh PPSN results above are from my 25" Shilen barrel.

Ron aka "Rip" for Riflecrank Internationale Permanente
NRA Life Benefactor and Beneficiary
.458 Winchester Magnum, Magnanimous in Victory
THE WALKING DEAD does so remind me of Democrap voters. Donkeypox.