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The Range
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Match ammo ballistics
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<blockquote data-quote="swampratt" data-source="post: 3527407" data-attributes="member: 15054"><p>My 22" barrel bolt gun is right at 400 fps faster than my 16" Ar barrel with the same load.</p><p></p><p>Maybe the 22" barrel is fast and maybe the 16" barrel is slow.</p><p>I tested some loads in a Ruger 22" barrel .308 and an 18" barrel savage and the difference in velocity was within 10 fps with some loads.</p><p>You need to chronograph the load in your rifle or the dope will not be correct.</p><p></p><p>Here is another B@ll buster if you buy your ammo and get a different lot number all bets are off as the new lot number may be faster or slower.</p><p></p><p>If you have a place to shoot 400 yards then stick a large piece of cardboard up at 100 yards and shoot at a given point like an X</p><p>you made with some electrical tape.</p><p></p><p>Now go to 200 and shoot at the same spot then 300 and 400 and anything in between.</p><p></p><p>Now know you should shoot at the same X on the cardboard you can now measure your drops.</p><p>And you will see if that ammo holds together at those distances.</p><p></p><p>I do that with all my rifles.</p><p></p><p>Another note is Holdover.</p><p>I like mil dot scopes.</p><p>I can now see the groups on the cardboard at 200 yards and farther and see through the scope how much I need to hold over to hit that spot.</p><p></p><p>After all that is figured I write it down on paper and take clear box tape and tape it to the side of the stock.</p><p></p><p>Now the fun part.</p><p>Set targets at each distance you have your dope.</p><p></p><p>You get 1 shot at each target to hit it.</p><p><img src="/images/smilies/smile.png" class="smilie" loading="lazy" alt=":)" title="Smile :)" data-shortname=":)" /></p><p>I did it with milk jugs to 500 yards. center punched each one with 1 shot per jug.</p><p>Now you are ready to hunt.</p><p>Or actually ready to test in a different temperature (:</p></blockquote><p></p>
[QUOTE="swampratt, post: 3527407, member: 15054"] My 22" barrel bolt gun is right at 400 fps faster than my 16" Ar barrel with the same load. Maybe the 22" barrel is fast and maybe the 16" barrel is slow. I tested some loads in a Ruger 22" barrel .308 and an 18" barrel savage and the difference in velocity was within 10 fps with some loads. You need to chronograph the load in your rifle or the dope will not be correct. Here is another B@ll buster if you buy your ammo and get a different lot number all bets are off as the new lot number may be faster or slower. If you have a place to shoot 400 yards then stick a large piece of cardboard up at 100 yards and shoot at a given point like an X you made with some electrical tape. Now go to 200 and shoot at the same spot then 300 and 400 and anything in between. Now know you should shoot at the same X on the cardboard you can now measure your drops. And you will see if that ammo holds together at those distances. I do that with all my rifles. Another note is Holdover. I like mil dot scopes. I can now see the groups on the cardboard at 200 yards and farther and see through the scope how much I need to hold over to hit that spot. After all that is figured I write it down on paper and take clear box tape and tape it to the side of the stock. Now the fun part. Set targets at each distance you have your dope. You get 1 shot at each target to hit it. :) I did it with milk jugs to 500 yards. center punched each one with 1 shot per jug. Now you are ready to hunt. Or actually ready to test in a different temperature (: [/QUOTE]
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