"Smallest group size or your money back."

[John Kielly]

I've seen where people recommended chucking the mandrel in a drill press and sanding it down a thou or so... always seemed like getting a consistent diameter over the length would be problematic.

Monte,

I have quite a supply of mandrels for my .308W donated by the incautious who can be bothered reading instructions. I've had no truble slimming them down in my 3/8" chucked drill press, which just happens to have the jaws relieved at exactly the right place to slip the retaining cap into. I've found that 600 W & D run up & down in a regular motion will take off a thou without too much trouble & that a quick spin with 1000 grit will give it a mirror finish. I now have mandrels .001", .002" & .003" under fatory size for particular applications.

I also adjust my die according to John Valentine's procedure.

 

[danyboy]

Then again, it will turn on ya and eat yer cases in an eye blink. As far as I'm concerned, it's a matter of when, not if, it will turn a case inside out

How so ? How would this Lee Collet Collet wear out your cases faster ?

 

[B_Rob85]

How so ? How would this Lee Collet Collet wear out your cases faster ?

You’re commenting on a post made over 14 years ago danyboy.

 

[danyboy]

So ? What's 14 years in a man's life ?

 

[Boyd Allen]

While we are on the subject.

Can these collet dies be used for Ackley Improved versions of the cartridge?

Their no stupid questions.

Concho Bill

Yes