seating dies

[bryan]

I just noticed my Wilson seater (6PPC) will accept a case that has not been turned at all........ .270 diameter. With a .262 neck case, will that not be a cause for misalignment?
Bryan

 

[jlcprec]

The neck on a case shouldn't touch anything in your seater die. If it did, and you had one case that was .0002 larger in the neck, you would have problems getting it out of the seater die.

 

[mike in co]

i had the same question when i did my .270 dia neck turned 6 ppc....wilson said they doubted i would have a problem with thier std seater....they were right. inspite of this( large dia) the seater works quite well....i think that inspite of us thingking of micro tolerances...the tools jsut need to be straight..aqnd thiers are.

mike in co

 

[Don]

I just noticed my Wilson seater (6PPC) will accept a case that has not been turned at all........ .270 diameter. With a .262 neck case, will that not be a cause for misalignment?
Bryan

Bryan, you are exactly right, that is why those that want to get their competitive loaded rounds under .001" runnout will use a Wilson seater blank and run their own chambering reamer to get an exact match to the barrel chamber.

This can also have the added benefit of correcting some mis-alignment caused by other sizing problems.

Standard Wilson seated loaded rounds that I have measured from other competitors will range from 0-.003" runnout, chambering reamed Wilson blanks will range from 0-.0004" runnout. How much does this help accuracy, hard to measure, but is one of those things that is a proven, better, measurable setup, that doesnt require any additional effort or cost once the orignal setup is complete.............Don