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Rifles, Reloading, Optics, Equipment
Gunsmithing
How to figure out freebore? How much is too Much??
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<blockquote data-quote="o2bmark" data-source="post: 2118014" data-attributes="member: 6358"><p>Start with what you can't or don't want to change. If you don't intend alter the throat of the rifle (ream or rechamber) then find out 1st where the bullet you're using contacts the lands. Now if that point is so far out that the bullet would be barely be inside the case then then all of the previous comments hold which focus on available case capacity, neck tension and jump (freebore). Guidelines of how much bullet shank should be in the neck of case are just that—guidelines. l'm pretty sure I could work up a load where the bullet is seated into the lands separately and the case loaded behind it (like some artilley) that would work. In practical terms i want enough neck engagement to hold the bullet straight with usual carrying and handling. Best jump or freebore is a trial and error proposition but I like the Berger website method for finding best seating depth. I use quickload software and find it entirely useful and immensely entertaining. I play "what if" for hours at a time!</p></blockquote><p></p>
[QUOTE="o2bmark, post: 2118014, member: 6358"] Start with what you can‘t or don’t want to change. If you don’t intend alter the throat of the rifle (ream or rechamber) then find out 1st where the bullet you’re using contacts the lands. Now if that point is so far out that the bullet would be barely be inside the case then then all of the previous comments hold which focus on available case capacity, neck tension and jump (freebore). Guidelines of how much bullet shank should be in the neck of case are just that—guidelines. l’m pretty sure I could work up a load where the bullet is seated into the lands separately and the case loaded behind it (like some artilley) that would work. In practical terms i want enough neck engagement to hold the bullet straight with usual carrying and handling. Best jump or freebore is a trial and error proposition but I like the Berger website method for finding best seating depth. I use quickload software and find it entirely useful and immensely entertaining. I play “what if” for hours at a time! [/QUOTE]
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How to figure out freebore? How much is too Much??
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