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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="Capt RB" data-source="post: 2044459" data-attributes="member: 85987"><p>Some of the stable powders are .5fps per degree when optimized. however, others can be 1.4-2per degree. and that is not linear. It might be that in the first 15 degrees then due to pressure dropping off goto more than 200fps in 50 degree changes if a hotter primer or more neck tension which then changes everything. I've done alot of cold weather load testing over the years and it can be enlightening to say the least. Ask the 300 rum guys what happens with Retumbo below 0. Hasn't happened to me yet but if it bridges it will minimum lock the gun up</p></blockquote><p></p>
[QUOTE="Capt RB, post: 2044459, member: 85987"] Some of the stable powders are .5fps per degree when optimized. however, others can be 1.4-2per degree. and that is not linear. It might be that in the first 15 degrees then due to pressure dropping off goto more than 200fps in 50 degree changes if a hotter primer or more neck tension which then changes everything. I've done alot of cold weather load testing over the years and it can be enlightening to say the least. Ask the 300 rum guys what happens with Retumbo below 0. Hasn't happened to me yet but if it bridges it will minimum lock the gun up [/QUOTE]
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Hunting
Long Range Hunting & Shooting
What would cause this? Bullet drop with elevation change
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