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Rifles, Reloading, Optics, Equipment
Reloading
Strange (low) velocity readings while starting Ladder
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<blockquote data-quote="Alan Griffith" data-source="post: 104477" data-attributes="member: 4686"><p>You may have just viewed my post on a Ladder test I shot yesterday using Ramshot Hunter in my 30-06 and Nosler 180 Ballistic Tips. </p><p></p><p>Once I was done with the Hunter Ladder I started on a Reloader 22 Ladder using the same bullet. I start with 5 fouling shots from 58 to 61 grains. I know this particular rifle pretty intimately (much to my wife's chagrin /ubbthreads/images/graemlins/grin.gif) and have always been able to exceed book max prop charges. Not feeling too greedy I had only preloaded 1 round at 61 grains (60 is book max). </p><p></p><p>1. 58.0 gr = 2541 fps, .0001 expansion</p><p>2. 59.0 gr = 2590 fps, .0000 expansion</p><p>3. 60.0 gr = 2638 fps, .0000 expansion</p><p>4. 60.5 gr = 2649 fps, .0000 expansion</p><p>5. 61.0 gr = 2675 fps, .0000 expansion</p><p></p><p>I measure case head expansion just forward of the extractor groove with a .0001" mic and stop when I hit .0006". </p><p></p><p>Having run out of fouling/pressure rounds and wanting more velocity than 2675 (especially from Rel 22) I did not want to stop thier. I pulled out my Harrell's powder meter and began to single load upto 63.5 grains. </p><p></p><p>Here's the interesting point. </p><p></p><p>61.4 gr = 2639 fps, .0002" expansion</p><p>62.5 gr = 2662 fps, .0002" expansion</p><p>63.0 gr = 1418 fps, 0 expansion</p><p>63.0 gr = 1418 fps, 0 expansion</p><p>63.5 gr = 1412 fps, 0 expansion</p><p></p><p>Here is my guess. The WLR primer did not have enought "umph" to ignite that much powder in an '06 case.</p><p></p><p>Any opinions?</p><p></p><p>Big Al</p></blockquote><p></p>
[QUOTE="Alan Griffith, post: 104477, member: 4686"] You may have just viewed my post on a Ladder test I shot yesterday using Ramshot Hunter in my 30-06 and Nosler 180 Ballistic Tips. Once I was done with the Hunter Ladder I started on a Reloader 22 Ladder using the same bullet. I start with 5 fouling shots from 58 to 61 grains. I know this particular rifle pretty intimately (much to my wife's chagrin [img]/ubbthreads/images/graemlins/grin.gif[/img]) and have always been able to exceed book max prop charges. Not feeling too greedy I had only preloaded 1 round at 61 grains (60 is book max). 1. 58.0 gr = 2541 fps, .0001 expansion 2. 59.0 gr = 2590 fps, .0000 expansion 3. 60.0 gr = 2638 fps, .0000 expansion 4. 60.5 gr = 2649 fps, .0000 expansion 5. 61.0 gr = 2675 fps, .0000 expansion I measure case head expansion just forward of the extractor groove with a .0001" mic and stop when I hit .0006". Having run out of fouling/pressure rounds and wanting more velocity than 2675 (especially from Rel 22) I did not want to stop thier. I pulled out my Harrell's powder meter and began to single load upto 63.5 grains. Here's the interesting point. 61.4 gr = 2639 fps, .0002" expansion 62.5 gr = 2662 fps, .0002" expansion 63.0 gr = 1418 fps, 0 expansion 63.0 gr = 1418 fps, 0 expansion 63.5 gr = 1412 fps, 0 expansion Here is my guess. The WLR primer did not have enought "umph" to ignite that much powder in an '06 case. Any opinions? Big Al [/QUOTE]
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Reloading
Strange (low) velocity readings while starting Ladder
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