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Rifles, Reloading, Optics, Equipment
Reloading
243 ladder test h4350 help
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<blockquote data-quote="ericbc7" data-source="post: 1944305" data-attributes="member: 79488"><p>it Seems clear to me that ladder tests are Simply a substitute for a chronograph (and a poor one at that). Even expert shots are somewhat at the mercy of the environment which can make an otherwise 1 moa group into a 2 or 3 moa one. In other words, if you are shooting at 300 yds, a perfectly executed shot can easily land anywhere in a 6" or 9" circle given some unexpected wind and you have little idea of what factors in addition to velocity caused that bullet to land at the extreme distance from aim point or center of group. Add to that the uncertainty of a single shot "group" you end up with a lot of data that you can't rely on.</p><p></p><p>at the very least a 3 shot group will give you a better idea of the group center since that is what I would want to compare between charge weights (CW). The wind proof option is to shoot 3 shots of each charge weight through a chronograph to get good velocity numbers, ES and pressure signs. The CWs that exhibit similar velocities are your nodes and you can choose your best node based on ES. Then you set up your targets at whatever range you like and start shooting groups varying seating depth.</p><p></p><p>lots of ammo and barrel life is wasted chasing deceptive ladder tests caused by adverse environments and/or technique and it doesn't take long to pay for a decent chronograph with the savings realized.</p></blockquote><p></p>
[QUOTE="ericbc7, post: 1944305, member: 79488"] it Seems clear to me that ladder tests are Simply a substitute for a chronograph (and a poor one at that). Even expert shots are somewhat at the mercy of the environment which can make an otherwise 1 moa group into a 2 or 3 moa one. In other words, if you are shooting at 300 yds, a perfectly executed shot can easily land anywhere in a 6” or 9” circle given some unexpected wind and you have little idea of what factors in addition to velocity caused that bullet to land at the extreme distance from aim point or center of group. Add to that the uncertainty of a single shot “group” you end up with a lot of data that you can’t rely on. at the very least a 3 shot group will give you a better idea of the group center since that is what I would want to compare between charge weights (CW). The wind proof option is to shoot 3 shots of each charge weight through a chronograph to get good velocity numbers, ES and pressure signs. The CWs that exhibit similar velocities are your nodes and you can choose your best node based on ES. Then you set up your targets at whatever range you like and start shooting groups varying seating depth. lots of ammo and barrel life is wasted chasing deceptive ladder tests caused by adverse environments and/or technique and it doesn’t take long to pay for a decent chronograph with the savings realized. [/QUOTE]
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243 ladder test h4350 help
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