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Rifles, Reloading, Optics, Equipment
Reloading
Verticle Spreading and load development help - where to go from here?
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<blockquote data-quote="GrayCreed" data-source="post: 2205317" data-attributes="member: 114633"><p>Once you find the seating depth you like you need to do a staterlee ladder test with 10-15 shots. Each shot has a different powder charge (you are not shooting groups). Shoot all shots from the lightest to the hotest being very careful to let the rifle cool an equal amount between each shot ( I usually set the timer for 1 min). Also I like to aim before I chamber the round. (So it goes like this: set timer, wait, timer is about to go off place round in weapon and aim, then timer goes off- push bolt forward and squeeze the trigger). Do worry about accuracy, you are trying to see the velocity curve rise as you go up in powder charge. When you are all done you plot the velocities as points on a graph-chart. This will show you the slow/rapid rise in velocity as you add more powder. Look on your chart for "flat spots" which are places where even with charge wieghts .2- .5g apart the velocity changes very little. Also this test will show you your primer/powder relationship and if the like each other. </p><p></p><p>This way saves you alot more powder, bullets and primers than the traditional way of loading 3-5 round groups at different powder charges. Once you find the flat spot you only need to load for groups in the flat spot and you can "re-tweak" your seating depth at that spot.</p></blockquote><p></p>
[QUOTE="GrayCreed, post: 2205317, member: 114633"] Once you find the seating depth you like you need to do a staterlee ladder test with 10-15 shots. Each shot has a different powder charge (you are not shooting groups). Shoot all shots from the lightest to the hotest being very careful to let the rifle cool an equal amount between each shot ( I usually set the timer for 1 min). Also I like to aim before I chamber the round. (So it goes like this: set timer, wait, timer is about to go off place round in weapon and aim, then timer goes off- push bolt forward and squeeze the trigger). Do worry about accuracy, you are trying to see the velocity curve rise as you go up in powder charge. When you are all done you plot the velocities as points on a graph-chart. This will show you the slow/rapid rise in velocity as you add more powder. Look on your chart for "flat spots" which are places where even with charge wieghts .2- .5g apart the velocity changes very little. Also this test will show you your primer/powder relationship and if the like each other. This way saves you alot more powder, bullets and primers than the traditional way of loading 3-5 round groups at different powder charges. Once you find the flat spot you only need to load for groups in the flat spot and you can "re-tweak" your seating depth at that spot. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Verticle Spreading and load development help - where to go from here?
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