A .458 WMR with 2.560" brass (trim-to-length) with a 500-gr TBSS seated deep has a COL of 3.340".
With recent acquisitions of .458 WinMag rifles, that 20"-barreled .458 WM in the works might turn into a second .458 WMR. This time with a single, proper reamer, and on a Ruger Hawkeye in a B&C stock, with that Alaska Arms drop floor plate. Her name will be "Ruby" after maternal grandmother of my better half.
Woodie will be the pioneer in walnut. I have some data from her already, from before she donated her mag box to Mohohbesta. She can handle whatever I can dish out. Comparing her 24" Whitworth-barreled velocities to a 20"-barreled Pac-Nor or McGowen on Ruby will be interesting.
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.