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Hunting
The Basics, Starting Out
what is a ladder test??????
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<blockquote data-quote="Bart B" data-source="post: 94960" data-attributes="member: 5302"><p>I, for one, don't think a ladder test is a good thing. Nobody I know of gets the same results shooting the same rifle with the same powder charge increments. And if any test results aren't the same time after time, the test isn't any good. I tried ladder testing years ago and gave up; test results weren't repeatable.</p><p></p><p>If someone has got the same results doing the same ladder test three times in a row, then they have my attention.</p><p></p><p>A bit of research will show folks that a 1/4th grain change in a .300 Win. Mag. powder charge changes muzzle velocity about 10 fps. A 100 fps muzzle velocity spread causes about 1.5 inches vertical shot stringing at 300 yards. With a 20 fps muzzle velocity spread (pretty good) with a given charge weight, half the shots fired after a 1/4th grain change will leave in the same muzzle velocity range as the previous charge produced. </p><p></p><p>Go figure......</p></blockquote><p></p>
[QUOTE="Bart B, post: 94960, member: 5302"] I, for one, don't think a ladder test is a good thing. Nobody I know of gets the same results shooting the same rifle with the same powder charge increments. And if any test results aren't the same time after time, the test isn't any good. I tried ladder testing years ago and gave up; test results weren't repeatable. If someone has got the same results doing the same ladder test three times in a row, then they have my attention. A bit of research will show folks that a 1/4th grain change in a .300 Win. Mag. powder charge changes muzzle velocity about 10 fps. A 100 fps muzzle velocity spread causes about 1.5 inches vertical shot stringing at 300 yards. With a 20 fps muzzle velocity spread (pretty good) with a given charge weight, half the shots fired after a 1/4th grain change will leave in the same muzzle velocity range as the previous charge produced. Go figure...... [/QUOTE]
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The Basics, Starting Out
what is a ladder test??????
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