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Freebore Discussion
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<blockquote data-quote="VinceMule" data-source="post: 2697639" data-attributes="member: 122164"><p>"CBTO do not 'grow'. They're set by your bullet seating"</p><p></p><p>Ogive Length is Fluid, and changes over time, due to firing the rifle.</p><p></p><p>I am referring to Growth in the leade the barrel is shot over hundreds of rounds, but some cartridges have their leade grow in 50 rounds or less. Throat dia grows over time also, and in combo with leade growth, there is a loss in velocity. How much of a loss is a factor of many things, including initial bore dia. Velocity is a huge factor on the harmonics of a barrel. Ever see groups turn into patterns when the weather drops 60*? Harmonics has changed the accuracy node with the velocity drop.</p><p></p><p>I am looking for extremely small groups on hunting rifles over the life of the barrel, and accuracy is a subjective thing, from one shooter to another.</p><p></p><p>Obviously, lots of ways to skin a cat.</p></blockquote><p></p>
[QUOTE="VinceMule, post: 2697639, member: 122164"] "CBTO do not 'grow'. They're set by your bullet seating" Ogive Length is Fluid, and changes over time, due to firing the rifle. I am referring to Growth in the leade the barrel is shot over hundreds of rounds, but some cartridges have their leade grow in 50 rounds or less. Throat dia grows over time also, and in combo with leade growth, there is a loss in velocity. How much of a loss is a factor of many things, including initial bore dia. Velocity is a huge factor on the harmonics of a barrel. Ever see groups turn into patterns when the weather drops 60*? Harmonics has changed the accuracy node with the velocity drop. I am looking for extremely small groups on hunting rifles over the life of the barrel, and accuracy is a subjective thing, from one shooter to another. Obviously, lots of ways to skin a cat. [/QUOTE]
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