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Rifles, Reloading, Optics, Equipment
Reloading
Ladder test of .308 with H4895. Am I doing this right?
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<blockquote data-quote="Lefty38-55" data-source="post: 2402735" data-attributes="member: 95029"><p>Now that's an <em>interesting </em>way to try it! Now I can't go into the technical details as well as Dan Newberry can, who came up with the <strong>O</strong>pticmal <strong>C</strong>harge <strong>W</strong>eight (OCW) method, but in his method you also plot the shot impact. In fact, he has a few very interesting OCW tests using 6.5s where people were <em>chastising </em>him for ignoring the ES of the load velocities, but in the end, the nodes his method identified were clearly superior. At long range too, even though they weren't the loads with the 'best' velocity values that some chase. The (his) lesson is, chasing the best velocity statistical numbers is foolish if the bullet is exiting the bore whilst the barrel is moving (sine wave) at its most!</p><p></p><p>With that all said, for using the IMR version of the 4895 powdah (yes, I know they're different, but close ... ) and a 168-grain bullet (albeit the SMK), his sweet spot was 43.6 grains - see attached. Maybe for what you already know, you could try his method (3 shots per load) from 42.8 to 43.2 or 43.4 by 0.2 grain increments, and plot the impacts? <strong>I for one would be most curious.</strong> Get the velocity data too.</p><p></p><p>Without having Dan's 'cheat sheet' (that he publishes on his website [see below] for various popular calibers) <em>?perhaps? </em>your method helps to pinpoint (and to do it faster, with less components used) a powder value/range to then further explore via his OCW method? FWIW I'm going to try your method, followed by my typical OCW approach, after I get done glass-bedding my latest project (Ruger No. 1 in 7mm Rem Mag, with freakin' incredible wood!). </p><p></p><p><strong><span style="color: rgb(41, 105, 176)">[URL unfurl="true"]http://www.ocwreloading.com/[/URL]</span></strong></p><p></p><p>6XC Test/115 DTAC = <strong><span style="color: rgb(41, 105, 176)">[MEDIA=youtube]4QOwp_CiklI[/MEDIA]</span></strong></p></blockquote><p></p>
[QUOTE="Lefty38-55, post: 2402735, member: 95029"] Now that's an [I]interesting [/I]way to try it! Now I can't go into the technical details as well as Dan Newberry can, who came up with the [B]O[/B]pticmal [B]C[/B]harge [B]W[/B]eight (OCW) method, but in his method you also plot the shot impact. In fact, he has a few very interesting OCW tests using 6.5s where people were [I]chastising [/I]him for ignoring the ES of the load velocities, but in the end, the nodes his method identified were clearly superior. At long range too, even though they weren't the loads with the 'best' velocity values that some chase. The (his) lesson is, chasing the best velocity statistical numbers is foolish if the bullet is exiting the bore whilst the barrel is moving (sine wave) at its most! With that all said, for using the IMR version of the 4895 powdah (yes, I know they're different, but close ... ) and a 168-grain bullet (albeit the SMK), his sweet spot was 43.6 grains - see attached. Maybe for what you already know, you could try his method (3 shots per load) from 42.8 to 43.2 or 43.4 by 0.2 grain increments, and plot the impacts? [B]I for one would be most curious.[/B] Get the velocity data too. Without having Dan's 'cheat sheet' (that he publishes on his website [see below] for various popular calibers) [I]?perhaps? [/I]your method helps to pinpoint (and to do it faster, with less components used) a powder value/range to then further explore via his OCW method? FWIW I'm going to try your method, followed by my typical OCW approach, after I get done glass-bedding my latest project (Ruger No. 1 in 7mm Rem Mag, with freakin' incredible wood!). [B][COLOR=rgb(41, 105, 176)][URL unfurl="true"]http://www.ocwreloading.com/[/URL][/COLOR][/B] 6XC Test/115 DTAC = [B][COLOR=rgb(41, 105, 176)][MEDIA=youtube]4QOwp_CiklI[/MEDIA][/COLOR][/B] [/QUOTE]
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Reloading
Ladder test of .308 with H4895. Am I doing this right?
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