Printable View
My new Lee collet crimping die puts a taper in the case neck. Smaller at the mouth and larger as you move toward the shoulder by about 1 1/2 thousandths. Is this normal? I would have thought that it would produce a straight diameter. I checked this by closing on a piece of lead turned to the correct diameter so case springback doesn't enter into the question.
tommyt
I use RCBS, Forester, Wilson, and Redding.
I have never had this issue with any of them.
Dennis
Just ram and did a test with mine, that doesn't happen. Did you adjust the dies According to the manual, or "how you always do it"?
Dark
Took another peek to make sure. The die is set to less than max.
tommyt
I have 4 Lee collet dies and not one has ever given me inconsistencies.
More often than not,it's usually human error. I have to agree with darkker.
You could disassemble the die and ck that the mandrel,collet are assembled correctly. I believe it's more of an adjustment issue though.
AAahhhhhhh never mind.
I was thinking of Lee pistol reloading dies that do a taper crimp with the bullet seating die.
Been a long day....
If you put a heavy crimp on it whether it is set at minimum or not it pulls the brass one way in a ring and will distort the neck partially by the stretching motion it create's. I wouldn't worry till I shot them and check for accuracy. I would bet you are crimping more than you think.
I am a little confused here. Do you have a Lee factory crimp die or a Lee collet neck sizing die? If the crimp die it is supposed to crimp right at the case mouth just like a factory crimp would be. If the neck sizing collet die you must not have it set up correctly.
Earl
Good question and I had to go look. It's the factory crimp die. Since I am loading single shot I don't think I need it. Thanks for the info.
tommyt
Confused indeed. ....