A more thorough review of the Ranger Rick load scarfed from Youtube:
Maybe Bubba had his chronograph too close to the muzzle and was getting some unreliable readings from the muzzle blast ?
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.