My friend bought a box of Lehigh defense .452 jacketed bullets, they say 220 gr extreme defense. He said that all his load books call for a .451 jacketed bullet, he wants to know if anyone has used jacketed bullets .452 in 45 acp and is it okay to do so? I told him that my cast bullets are .452 and shoot fine in my pistols but he said jacketed are different than cast, your thoughts are appreciated.