I think some bullets cross the line from being "bullets" and threaten to claim "ingot" status.
I have one such monster that got test-drives in my now-departed Ruger #1 in 45/70. I refer to it as "Mastodon Flattener", but its commercial sobriquet is "Lyman #462560", a 552 grain bore-rider with radiused flat-nose. It resembles the hybrid offspring of Lyman #311291 and a 750 grain 50 BMG bullet. Once velocity went past 1300 FPS in that 7-1/4# Ruger #1, recoil became "exhilarating" as the late Charles Askins was known to call it. The redeeming feature of this bullet--yes, there actually is one--is that a 100%-density load of WC-860 powder (45.0 grains) set off by Federal #215 primers leaves no unburned powder kernels downbore. Velocity is in the tolerable range, about 1250-1275 FPS and accuracy is adequate--better than deer slugs from a rifled Rem 870. You don't shoot small targets with 552 grain 45 caliber bullet or with 12 gauge slugs. Marlin and Ruger 45/70s have 1-20" twists; the 458 Win Mags this bullet was meant to address have 1-14" twists. It might be a more accurate number in a faster twist--I did run some into the 1500-1550 ballpark in the #1, and they grouped a little tighter (1-3/4" at 50 yards vs. 2-1/2"), but 20 rounds of that entertainment was sufficient in a given month. In the Marlin, the loaded rounds are WAY too long to run up the lifter, so they go in one at a time. They will extract if unfired, but can't eject. So, the lever pivot screw comes out--remove the lever--pull out the bolt (the ejector WILL hit the case rim) unhook the case rim from the extractor, push the cartridge forward--remove the ejector--remove the bolt, and let the cartridge slide out in pursuit of the removed bolt. You have been fairly warned.