Common practice in the bullet casting industry with Lead/Polymer coated bullets in 45 caliber is to size them at .452” for proper obturation, even in 45 ACP. We have thousands of happy customers, including ourselves that load and shoot these same bullets with no problems of them feeding. My guess is you might be using a combination seating/crimp die which is the problem. What happens with those dies and lead bullets is as the bullet is seated and the crimp process starts the bullet is still being seated and this expands the casing ever so slightly that you will have problems chambering the bullet and won’t pass the plunk test. We’ve seen this before. We strongly recommend using a separate seating and crimp die. The review states the bullet had to be resized to .451” and it still didn’t work? That tells us it’s the reloading equipment setup that’s the problem… not the bullet. We also recommend a Lee Carbide “Factory” Crimp die.
They will shoot better sized at .452" as they obturate better. Lead bullets are always sized .001" over bore diameter even for 45 ACP. This is the standard in the industry. We shoot these same bullets with no feeding or chambering problems. Jacketed and plated bullets are sized at bore diameter. If your gun has a tight chamber and you do have chamber problems than we recommend using a Lee Carbide “Factory” Crimp Die.
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