A month ago, my Buddy swapped a 460 revolver for a bolt action rifle in 458 WM, I can't remember the rifle brand? But it's a heavy one.
Years ago, I had been given some once fired 458 brass, I was gonna sell it, but I put it in my scrap bin, due to a line in each case, that I thought was a crack.
Last month, right after the swap, when my buddy asked me to load him some ammo. While I no longer had 458 dies, I did remember that brass in the scrap bin (which never gets emptied), inspected it again and decided that line/crack was fairly uniform. So I sized 4 cases (with 45-70 dies), then I expanded the 4 mouths, figuring the line/crack would better identify itself. Well, I decided after sizing/expanding 4 cases that the line was just a line, and loaded up the 4 cases with a 383 gr RN GC bullet (sized to .459 and SL68B lube), and a moderate charge of 3031 (60gr), Book says that's about 1900fps and likely about 35Kcup. All 4 rds chambered easily in the gun. My Buddy says I will be the first to pull the trigger, as he watched my redneck ways of loading those 4 rounds...and didn't fully trust 'em. Also, I interpullated that charge from 45-70 data, because I couldn't find any data for the 458 that I liked with a 383gr RN...My Buddy said that isn't the way you use data. I laughed.
Fast forward to last night, Gun Club meeting.
We get there early, with hopes of shooting the 458.
I had forgot my prescription shooting glasses, so the sights were all fuzzy, plus the sun was setting and we were in the woods, so it was plenty dark. I load it with one of my redneck loads, and shoot it in the pistol pit (25 yds), I aim for the Bull and hit 4 inches high. The recoil wasn't punishing, about the same as a 12ga pump action with trap loads. I load a factory round (510gr) in the chamber, and pull the trigger...YEOWZA, I felt that and am still Black and blue this morning. I aimed at the same Bull, and hit 1/2" away from the hole the 383gr cast bullet made. While that was only 25 yds, Those two shots were either just luck, since the sight picture was so fuzzy, or my redneck loads were pretty damn good.
My buddy and another club member took a couple shots, and said, that was enough for them, LOL.
Another club member said those shots rousted a dozen wild turkeys in the Clubs back yard (AKA: the 200 yd range, which is surrounded by large trees), they were likely getting ready for a nighttime roost.