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Rifles, Reloading, Optics, Equipment
Reloading
Help with new magneto speed numbers
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<blockquote data-quote="redneckdan" data-source="post: 1920260" data-attributes="member: 8932"><p>Here is my data analysis from a work up last night with superformance and the dtac in 6 creed using reformed 22-250 brass. I had tested this powder and bullet before in reformed 243. This brass runs about .8gr hotter than the reformed 243 and I wanted to be in the 2950fps neighborhood, so I used the upper half of the hodgdon data range for the span of 10 rounds at .2gr spacing. The velocity graph has a nice flat spot at 42.5 to 42.9.</p><p></p><p>So I loaded up 5 rounds each at 42.5, 42.6, 42.7, 42.8 & 42.9 and chrono'd them.</p><p></p><p>The 2nd graph shows the charge weights coming into and exiting the node. I picked 42.8 as my charge since its warmer out and hopefully will be reasonably stable as temps cool off into this fall.</p><p></p><p>I plan to shoot the 3rd groups tomorrow night.</p></blockquote><p></p>
[QUOTE="redneckdan, post: 1920260, member: 8932"] Here is my data analysis from a work up last night with superformance and the dtac in 6 creed using reformed 22-250 brass. I had tested this powder and bullet before in reformed 243. This brass runs about .8gr hotter than the reformed 243 and I wanted to be in the 2950fps neighborhood, so I used the upper half of the hodgdon data range for the span of 10 rounds at .2gr spacing. The velocity graph has a nice flat spot at 42.5 to 42.9. So I loaded up 5 rounds each at 42.5, 42.6, 42.7, 42.8 & 42.9 and chrono'd them. The 2nd graph shows the charge weights coming into and exiting the node. I picked 42.8 as my charge since its warmer out and hopefully will be reasonably stable as temps cool off into this fall. I plan to shoot the 3rd groups tomorrow night. [/QUOTE]
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Reloading
Help with new magneto speed numbers
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