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Rifles, Reloading, Optics, Equipment
Reloading
28 Nosler Load Development
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<blockquote data-quote="chav0_12" data-source="post: 2796876" data-attributes="member: 29765"><p>Can someone help me make sense of this data that I acquired yesterday at the range with my 28 Nosler with 195gr Bergers, with Retumbo. I was getting pretty good SDs and ESs once I got to a point. I just can't make too much sense of all of this data. Before I had a chronograph I would make all of my decisions based off of group size. While that may work, I also want to be able to take this rifle out to longer distances and I know how important extreme spreads can be at those longer ranges. If I remember correctly, my best group was at 79gr and then 79.5 also have a respectable groups size but it wasn't as small. I also realized, when I got home, that I was starting to get extractor marks over the 80gr charge. Even going up to 82.5 the marks were light enough that I needed to maneuver the case perfectly in the light to see the marks. There was never any heavy bolt lift or any other pressure signs, well maybe a little flattened primers, but not bad. Should I work in the 78.5-79.5gr range and see what I can get. I am sort of limited by magazine length at 3.605" but I can also get a 3.715" magazine for this rifle. See the charts and data acquired below.</p><p></p><p></p><p> [ATTACH=full]455355[/ATTACH][ATTACH=full]455356[/ATTACH]</p></blockquote><p></p>
[QUOTE="chav0_12, post: 2796876, member: 29765"] Can someone help me make sense of this data that I acquired yesterday at the range with my 28 Nosler with 195gr Bergers, with Retumbo. I was getting pretty good SDs and ESs once I got to a point. I just can't make too much sense of all of this data. Before I had a chronograph I would make all of my decisions based off of group size. While that may work, I also want to be able to take this rifle out to longer distances and I know how important extreme spreads can be at those longer ranges. If I remember correctly, my best group was at 79gr and then 79.5 also have a respectable groups size but it wasn't as small. I also realized, when I got home, that I was starting to get extractor marks over the 80gr charge. Even going up to 82.5 the marks were light enough that I needed to maneuver the case perfectly in the light to see the marks. There was never any heavy bolt lift or any other pressure signs, well maybe a little flattened primers, but not bad. Should I work in the 78.5-79.5gr range and see what I can get. I am sort of limited by magazine length at 3.605" but I can also get a 3.715" magazine for this rifle. See the charts and data acquired below. [ATTACH type="full" alt="velo-es-sed.png"]455355[/ATTACH][ATTACH type="full" alt="graph-velo.png"]455356[/ATTACH] [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
28 Nosler Load Development
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