Make sure to full length resize, make sure your die is adjusted correctly? Lee Carbides Dies and Lee Crimp Die is what I started with and continue to use. Make sure it it adjusted correctly as well. Check your powder charge also? I don't use Viht powders but would recommend working up a little more load if you have not exceeded recommended max loading per the reloading manual? Do not exceed the recommended Max!! Check your COAl as well. WSF or WST are common powders for the 45ACP.
