I have a 500S&W and when loading of jacketed bullets with cannelures it seems easy. Crimp at the cannelure and use a good crimp that binds the bullet. I get a good clean burn and good velocity.
I got a bunch of plated bullets without cannelures and I am seating them to the same OAL as jacketed bullets and used the same crimp. The problem is I don't get good powder burn and velocity as shown. I have been advised to "crimp" more firmly. The problem is I don't know what that means. Sure I measure case length and I turn down the die until it touches the shell plate and the edge of the case mouth rolls sharply into the bullet. Seems simple enough. What am i missing? Can I over crimp? I know there is a direct relation between charge weight and crimp on the pressure curve. So how do you get a repeatable crimp?
Thanks.
I got a bunch of plated bullets without cannelures and I am seating them to the same OAL as jacketed bullets and used the same crimp. The problem is I don't get good powder burn and velocity as shown. I have been advised to "crimp" more firmly. The problem is I don't know what that means. Sure I measure case length and I turn down the die until it touches the shell plate and the edge of the case mouth rolls sharply into the bullet. Seems simple enough. What am i missing? Can I over crimp? I know there is a direct relation between charge weight and crimp on the pressure curve. So how do you get a repeatable crimp?
Thanks.