Lee collet crimp die vs factory crimp die question

[AJC1]

I noticed when I opened the collet crimp die package there were not any instructions included. I'm sure it's not rocket appliances but I will definitely have to figure out what works.

Look down through the top of the die with no ammunition installed. You can see the fingers move. I don't crimp hard with the collet die because you can generate enough force to deform the bullet. That is not something I try and do. I'm not a huge fan of crimping in rifle. But I have tube mag guns and it's important. I love a good roll crimp, probably because I started really crimping with 357 mag again in tube magazines. If you crimp hard your case mouths will have 4 lumps. It may not hurt anything but I don't like it.

 

[Waterboy3313]

I will have to double check my package. I got home from work and the wife looked at me with a disgusted look saying I got another package in the mail. I kind of opened it quickly and then took it outside to the garage and set it on the loading bench. I got a couple of other things while I was at it in the same package. I will go through it tomorrow hopefully when I have a free uninterrupted minute and make sure I didn't over look something. If instructions come as a standard issue from lee and they did their part there is a pretty good chance I missed it

 

[dcarr]

Need more neck tension? Size brass smaller using a Lee UNDERSIZE sizing die. Turn your expander down smaller.

I vaguely recall buying a lee undersize sizing die for that very reason but couldn't remember what caliber. My sizing die for .45acp has a U stamped on it . No complaints with neck tension there.

 

[AJC1]

I vaguely recall buying a lee undersize sizing die for that very reason but couldn't remember what caliber. My sizing die for .45acp has a U stamped on it . No complaints with neck tension there.

Most cases are way oversized and then are over expanded. I would chase the expanding side before the sizing side, but the only absolute is everything gets messed up at one point or another.

 

[Waterboy3313]

Digging through my box of Lee stuff tonight I did find some instructions. It looks pretty simple and I think I can figure it. When I get more free time I will play with it and see what happens.

 

[joneb]

I use the Lee collet crimp die for .38/357 mag and 44spl/44 mag. I had to chop .125" off of these dies for the specials I use a .125 washer to compensate.

 

[American_Fusilier]

My sizing die for .45acp has a U stamped on it

That means it's undersized