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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Opinions (or facts) about air space inside a loaded case.
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<blockquote data-quote="goodgrouper" data-source="post: 129067" data-attributes="member: 2852"><p>My own experiences show that low deviations can be attained with load densities under 85% and can shoot quite well. However, it seems that low deviations that have a density of 90% or greater usually KEEP their low deviations low in circumstances pertaining to differing hunting situations related to angle of shots and differing climatic conditions.</p><p></p><p>Powder positioning in the case before the primer flash hits it does affect how the powder burns to some degree. If you have a density of 70% and take a 25 degree downhill shot, you can bet the progression of the powder changing to a gas will not be the same as case full of powder under the same shooting condition. The degree of change will be different for each powder and primer and as Catshooter already stated, each individual gun is it's own animal.</p><p></p><p>Only individual testing of each gun will show how much difference the density will make, but just to eliminate having to test every little thing in every gun, I try to get above 95% density just so I can count on that load even if I have to take a steep downhill shot. If the gun likes a load that has a density under 85%, then I will go test it on angled shots in colder and warmer weather to see if there will be a surprise!</p></blockquote><p></p>
[QUOTE="goodgrouper, post: 129067, member: 2852"] My own experiences show that low deviations can be attained with load densities under 85% and can shoot quite well. However, it seems that low deviations that have a density of 90% or greater usually KEEP their low deviations low in circumstances pertaining to differing hunting situations related to angle of shots and differing climatic conditions. Powder positioning in the case before the primer flash hits it does affect how the powder burns to some degree. If you have a density of 70% and take a 25 degree downhill shot, you can bet the progression of the powder changing to a gas will not be the same as case full of powder under the same shooting condition. The degree of change will be different for each powder and primer and as Catshooter already stated, each individual gun is it's own animal. Only individual testing of each gun will show how much difference the density will make, but just to eliminate having to test every little thing in every gun, I try to get above 95% density just so I can count on that load even if I have to take a steep downhill shot. If the gun likes a load that has a density under 85%, then I will go test it on angled shots in colder and warmer weather to see if there will be a surprise! [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Opinions (or facts) about air space inside a loaded case.
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