wanted: "Bump" die for 338 Win. mag

wildcat westerner

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Nov 14, 2009
Messages
734
Hello,
The initial testing of my long range 338 Win mag has proved successful. The 33 inch barrel has provided velocities exceeding max loads listed in reloading manuals for the .338 lapua. Pressures seem low, allowing easy extraction and no signs of primers flatness. 200 grain bullets have exceeded 3,400 fps.

However, after full length sizing the cases I can slide the cases all the way back into the chamber easily, but cannot close the Kelbly Tactical bolt handle. I am told the shoulder needs to be set back. I have Redding FL dies and I also have my tightnecked chambering reamer. I would appreciate your advice as to how to deal correctly with this problem. I don't know of anyone who makes a bump die for this caliber.

WW
 
What is your shoulder setback from a fired case to a sized case?

Shoulder bump with an FL die basically depends how you set up the die. If you have the die cranked down to the shell holder it's taking the shoulder back to min spec (or smaller)
 
all Full Length dies will bump the shoulder, how much depends on how you have the die set up.
How far are you currently bumping the shoulder?

I'm guessing something else is at play here.
 
have Redding FL dies and I also have my tightnecked chambering reamer.
If you say your brass goes all the way into the chamber by hand, but does not when the bolt is manipulating the case, then you have a mystery.
What does a fired case neck measure?
What does a case neck measure after sizing?
What does a case neck measure with a bullet seated?
What does your headspace measure on fired brass?
What does your headspace measure on sized brass?
What does the expansion line measure before and after firing?
Why aren't/haven't you measured any of this?
Why am I responding to this thread??
A mystery is my answer…

Cheers.
 
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