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Hunting
Long Range Hunting & Shooting
What would cause this? Bullet drop with elevation change
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<blockquote data-quote="kbrent1223" data-source="post: 2045678" data-attributes="member: 115814"><p>My response on O2 and burn rate was not meant to be taken as definitive, sorry if it came out that way it was written in haste. As i stated i am just throwing it out there. Smokeless powders shouldn't require 02 to burn but I'm only speculating it could possibly be an effect. The barrel is not airtight, if all powder burned at ignition then why does barrel length matter? Many article discussing the relationship of barrel length and ability to burn all powder. But i agree totally it is a far reaching speculation. My only thought in bringing it up was that everything else that seemed obvious had been covered so i was looking outside the box. To the gentleman stating that air doesn't sneak down the barrel.... Your barrel if full of air containing O2. Unless you jam the bullet into a smooth bore and then plug the end of your barrel, but if that's what tightens your groups, go for it.</p><p>If i crawl back into the box, I'm guessing the type of rest and the person shooting are your main suspects. I have experience many change in poi going from bipod and rear bag to two bags. Worst ever is a neighbor was dying to show me his new lead sled. I had just mounted a scope on a 25-06 and agreed to go with him and use it. Got it zeroed and grouping great. Shot it off of a bipod and nothing in the rear and was off by 6 inches at 100.</p></blockquote><p></p>
[QUOTE="kbrent1223, post: 2045678, member: 115814"] My response on O2 and burn rate was not meant to be taken as definitive, sorry if it came out that way it was written in haste. As i stated i am just throwing it out there. Smokeless powders shouldn't require 02 to burn but I'm only speculating it could possibly be an effect. The barrel is not airtight, if all powder burned at ignition then why does barrel length matter? Many article discussing the relationship of barrel length and ability to burn all powder. But i agree totally it is a far reaching speculation. My only thought in bringing it up was that everything else that seemed obvious had been covered so i was looking outside the box. To the gentleman stating that air doesn't sneak down the barrel.... Your barrel if full of air containing O2. Unless you jam the bullet into a smooth bore and then plug the end of your barrel, but if that's what tightens your groups, go for it. If i crawl back into the box, I'm guessing the type of rest and the person shooting are your main suspects. I have experience many change in poi going from bipod and rear bag to two bags. Worst ever is a neighbor was dying to show me his new lead sled. I had just mounted a scope on a 25-06 and agreed to go with him and use it. Got it zeroed and grouping great. Shot it off of a bipod and nothing in the rear and was off by 6 inches at 100. [/QUOTE]
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What would cause this? Bullet drop with elevation change
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