Arise Sir Meplat, and go tenderize a moose with that 550-gr WFNGC. That is indeed a superb load you have concocted. I might substitute Hodgdon Benchmark for your IMR-3031, same charge, and expect very similar results. IMR-3031 might be the old classic benchmark powder for the .458 WinMag, but there are so many more choices nowadays. Sir Russ has had great results with Hodgdon Benchmark (ADI same-same) with his 550-gr Woodleigh.
That is remarkable to see the recovered bullet beautifully mushroomed with gas check engraved and holding tight. Good job applying those ! Was it recovered from game or artificial media ?
Paper-patched 550-grain 45-cals at about 1400 fps, with more aerodynamic noses, were the zenith of 1000-yard, Creedmoor-type contests in the 1870s. But that wide FN will smack game better at closer ranges, especially when started out at over 2000 fps.
Saint Bagwell's 480-grain FN plain base at 1300 fps had a smaller meplat and worked wonders, whether it expanded or not, from his .45-70 out to 500 yards. And the Lottites think the .458 WinMag bullets just tickle the game gently ?
I have a Baikal/Remington/Spartan .45-70 double rifle with jackscrew muzzle regulation. One of these days I will get it regulated for the Saint Bagwell ballistics, assuming the groove diameter and twist are OK. I need to check that. Deer season is coming next weekend for my .458 WinMag however ...
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.
