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Rifles, Reloading, Optics, Equipment
Reloading
Help me interpret load data - First post
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<blockquote data-quote="PddPdd" data-source="post: 2449436" data-attributes="member: 111799"><p>I think you picked a portion of the "right" velocity node to investigate further (69.8 - 70.2) but I probably would have extended it to include loads up to 71.2 grains. In your original data your extreme spread (ES) between 70.0 -71.0 is only 15 fps.</p><p></p><p>From the second set of loads you shot your ES was lowest (4 fps) for 70.0 & 70.4 grains so you could go with 3 shot groups for accuracy in that range or add in the loads up to 71.2 so your aren't leaving anything on the table.</p><p></p><p>In general, I try to shoot all my loads that I'm comparing to each other, in the same sitting, so I don't have to worry so much about temperature driven velocity changes (especially since the key data from these tests are velocity).</p><p></p><p>To answer your question, if you pick the best (smallest ES and widest charge weight) you won't need to load temperature dependent rounds. This assumes you are using a less temperature sensitive powders such as the Hodgden extreme line.</p><p></p><p>Hope that helps.</p></blockquote><p></p>
[QUOTE="PddPdd, post: 2449436, member: 111799"] I think you picked a portion of the "right" velocity node to investigate further (69.8 - 70.2) but I probably would have extended it to include loads up to 71.2 grains. In your original data your extreme spread (ES) between 70.0 -71.0 is only 15 fps. From the second set of loads you shot your ES was lowest (4 fps) for 70.0 & 70.4 grains so you could go with 3 shot groups for accuracy in that range or add in the loads up to 71.2 so your aren't leaving anything on the table. In general, I try to shoot all my loads that I'm comparing to each other, in the same sitting, so I don't have to worry so much about temperature driven velocity changes (especially since the key data from these tests are velocity). To answer your question, if you pick the best (smallest ES and widest charge weight) you won't need to load temperature dependent rounds. This assumes you are using a less temperature sensitive powders such as the Hodgden extreme line. Hope that helps. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Help me interpret load data - First post
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