Ill add my 2 cents for the kinetic bullet puller. I have used mine for tightly crimped 357 Lead SWC bullets and jacketed bullets, 30-30 highly crimped Jacketed bullets, 30-06 jacketed bullets, 7.62x39 jacketed bullets, 32 ACP jacketed bullets, and 9mm jacketed bullets.
I do have to say that it takes a solid surface (like a wood workbench) and a real sharp and quick swing to loosen a really tight crimp, followed by a couple of more sharp hits, depending on the caliber.