Originally Posted by
MightyThor
400 Celsius is 752 Fahrenheit. That should be hot enough. My last batch was done at 800 Fahrenheit. If you can easily squish the jacket mouth with your finger then you are getting enough heat. You didn't say how heavy you are trying to make the bullets, or what lube you are using or how much. As much as anything I find that folded noses are a combo of having too little lube on a jacket that is set a little deep in the die, and probably a little too much speed on the handle. Or to put it another way, there is usually more than one cause. If I have several folds I usually stop, pull the dies, clean them and set them up fresh.