I am looking to load some 200gr cast boolits in my 300 Whisper and I am curious what people are using to crimp the case mouth? I normally have loaded cast boolits in calibers that i have a crimp die for. Do you flare the case mouth and then crimp?
I Crimp the Lee 200gr cast in a separate step using the Lee .30 Carbine Factory Crimp Die, and a large E clip sitting on top of the shell holder. I have also done it without the E clip but the crimp seems too far back. I haven't really noticed a difference when shooting, so it may not matter