I know what a roll and taper crimp are; what's a factory crimp or profile crimp?

[Nozzelnut]

I'm a noob with reloading, and I was looking for taper crimp dies (for 40 and 45), and came across a couple other kinds that I've never heard of; the factory crimp and the profile crimp. I'm familiar with roll and taper crimps.

I've seen the threads on the Lee factory crimp; but what do they do differently than a taper crimp or roll crimp? Same with profile crimp.

I've tried searching; but my google fu is weak tonight.

Thanks
NN

 

[rugerdude29]

Factory Crimp: Simply put, Lee added a carbide ring to the crimping die that sizes any round run through it that measures over a certain diameter, so the round will work in any chamber of that caliber. These dies WILL NOT seat a bullet. Dies for autoloading calibers are taper crimp and revolver calibers are roll crimp.

Profile Crimp: This is just Reddings term for a roll crimp. Nothing different from any other roll crimp, just different name.

Hope this answers your question!

 

[Walkalong]

Reddings "Profile Crimp" die is their name for a roll crimp only die made to use in a separate step. They make a seperate Taper crimp crimp only die, but evidently they don't call it a Profile Crimp die, just plain old Taper Crimp.

There are two kinds of crimp for pistol rounds. Taper and Roll.