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Rifles, Reloading, Optics, Equipment
Reloading
Ladder test/accuracy and velocity ES
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<blockquote data-quote="4xforfun" data-source="post: 941786" data-attributes="member: 9172"><p>Yep, that is actiually what a ladder test is. But looking at how three of the same powder charges did as a group in not importand. If you did the ladder test correctly you would have shot some "warm up loads".....get that bbl pretty warm. Then, shoot your shots slow at a timed intervel. I use a clock and space the shots out to about 60 seconds, depending on the weather (cooler breezy days cool faster than hot still days). That is about right to keep the tube roughly the same temp. If you start with a cold tube and run you shots fast you have just introduced heat induced bbl stress into the equasion. My point is that it might be an hour between shots of the same powder charge, so all kind of enviornmental things could have happend. </p><p> </p><p>When I run more than one ladder test at a time I clean between strings and let everything cool. I also run the second test bacwards...high to low.</p><p> </p><p>When I run a tripple, what I look for is that the clusters happen at the same powder charges. Three ladder tests that show the same clusters....AWSOME!!</p></blockquote><p></p>
[QUOTE="4xforfun, post: 941786, member: 9172"] Yep, that is actiually what a ladder test is. But looking at how three of the same powder charges did as a group in not importand. If you did the ladder test correctly you would have shot some "warm up loads".....get that bbl pretty warm. Then, shoot your shots slow at a timed intervel. I use a clock and space the shots out to about 60 seconds, depending on the weather (cooler breezy days cool faster than hot still days). That is about right to keep the tube roughly the same temp. If you start with a cold tube and run you shots fast you have just introduced heat induced bbl stress into the equasion. My point is that it might be an hour between shots of the same powder charge, so all kind of enviornmental things could have happend. When I run more than one ladder test at a time I clean between strings and let everything cool. I also run the second test bacwards...high to low. When I run a tripple, what I look for is that the clusters happen at the same powder charges. Three ladder tests that show the same clusters....AWSOME!! [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Ladder test/accuracy and velocity ES
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