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Rifles, Reloading, Optics, Equipment
Reloading
Proper die set up
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<blockquote data-quote="DJ Fergus" data-source="post: 1828130" data-attributes="member: 93895"><p>I've had several factory and rebarreled belted magnum rifles. What I have saw in many instances is: even if you have .000 to .004 headspace on the case belt to chamber belt recess (This is where belted magnums were originally intended to be headspaced) then you could and it's likely that you have alot more head space from the case shoulder to the Chambers shoulder. Up to .010 more. Some of the trouble can also be is that your case can blow out to a much larger diameter just below the shoulder than your resizing die is just below the shoulder. So you get into a situation where if you are not bumping the shoulder hard enough, the case actually gets longer head space at the shoulder because all you have done is sized the diameter of the case smaller just below the shoulder and it made it grow longer there. For that reason, I set the die up to bump the shoulder back farther than needed on the first case and then start backing the die out on the next case until I get the desired head space off the shoulder that I want. Saying all of that, I need to say that I only neck size with a Lee collet die for the first 2-3 firings on belted magnums, then I full length size to just bump the shoulder with the method mentioned on a Redding body die. I could bump it Everytime with the body die but I choose not to because even after one firing It still doesn't blow the case out enough and I still have a bit more headspace at the shoulder than I want. In some of my beltless cases, I bump shoulders ever time I size.</p></blockquote><p></p>
[QUOTE="DJ Fergus, post: 1828130, member: 93895"] I've had several factory and rebarreled belted magnum rifles. What I have saw in many instances is: even if you have .000 to .004 headspace on the case belt to chamber belt recess (This is where belted magnums were originally intended to be headspaced) then you could and it's likely that you have alot more head space from the case shoulder to the Chambers shoulder. Up to .010 more. Some of the trouble can also be is that your case can blow out to a much larger diameter just below the shoulder than your resizing die is just below the shoulder. So you get into a situation where if you are not bumping the shoulder hard enough, the case actually gets longer head space at the shoulder because all you have done is sized the diameter of the case smaller just below the shoulder and it made it grow longer there. For that reason, I set the die up to bump the shoulder back farther than needed on the first case and then start backing the die out on the next case until I get the desired head space off the shoulder that I want. Saying all of that, I need to say that I only neck size with a Lee collet die for the first 2-3 firings on belted magnums, then I full length size to just bump the shoulder with the method mentioned on a Redding body die. I could bump it Everytime with the body die but I choose not to because even after one firing It still doesn't blow the case out enough and I still have a bit more headspace at the shoulder than I want. In some of my beltless cases, I bump shoulders ever time I size. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Proper die set up
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