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Rifles, Reloading, Optics, Equipment
Reloading
Ladder Tests
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<blockquote data-quote="boomtube" data-source="post: 228669" data-attributes="member: 9215"><p>"anything less than 300 yards only results in a lot of holes very close together"</p><p> </p><p>Okay, I understand. You are understandably seeking an "expanded scale". But, that confusion can be eliminated quite simply at 100 yards using my modified latter tests. Basically, I only fire a single round at a single target so there can be no cluster holes to swallow bullets at all.</p><p> </p><p>When I load for a ladder test, I number each round with a Sharpie, which resists smudging very well on clean brass. If I get clumsy and spill them, they are easily restored to order. Then I number a series of small targets with the same numbers as the cases and shoot at them in turn. A notepad keeps track of the charge, or seating depth, and the velocity of each round is entered as I fire them. </p><p> </p><p>When the shot series is complete, I take another target and make a composite of all the fired shots on it. I lay the fired targets over it in turn, marking the hole and numbering each as I go. If things start getting too cluttered, I simply make another composit target to keep things distinct and clean. </p><p> </p><p>There is no confusion, no bullets are lost in the cluster and it's all done at 100 yards. And a couple of my old factory rifles, an original 22-250/Browning-Sako and a Rem 40xb/6mm International produce consistant groups under .5" during my ladder tests.</p></blockquote><p></p>
[QUOTE="boomtube, post: 228669, member: 9215"] "anything less than 300 yards only results in a lot of holes very close together" Okay, I understand. You are understandably seeking an "expanded scale". But, that confusion can be eliminated quite simply at 100 yards using my modified latter tests. Basically, I only fire a single round at a single target so there can be no cluster holes to swallow bullets at all. When I load for a ladder test, I number each round with a Sharpie, which resists smudging very well on clean brass. If I get clumsy and spill them, they are easily restored to order. Then I number a series of small targets with the same numbers as the cases and shoot at them in turn. A notepad keeps track of the charge, or seating depth, and the velocity of each round is entered as I fire them. When the shot series is complete, I take another target and make a composite of all the fired shots on it. I lay the fired targets over it in turn, marking the hole and numbering each as I go. If things start getting too cluttered, I simply make another composit target to keep things distinct and clean. There is no confusion, no bullets are lost in the cluster and it's all done at 100 yards. And a couple of my old factory rifles, an original 22-250/Browning-Sako and a Rem 40xb/6mm International produce consistant groups under .5" during my ladder tests. [/QUOTE]
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