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Rifles, Reloading, Optics, Equipment
Reloading
300 Rum Load development help needed.
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<blockquote data-quote="redchinviking" data-source="post: 1659973" data-attributes="member: 110512"><p>ok Thanks for the input ballistics guy...prob overthinking the numbers, but it's gotten me this far! I guess it's worth a try to take that 92-92.5 out to 1000 and see if it'll hold together but always heard that SD's should be single digit if you want consistency at 1000. And it has held true for me up to this point. I guess for a hunting round .5 moa that percentage error can be acceptable at higher spreads from what I'm reading. Last year with the h1000/NLRAB nosler brass the ladder work was straight forward with low ES being the best groups. ES/SD went Up and down in the corresponding accuracy nodes. Pretty straight forward. Now this year the opposite is true. Still scratching my head wondering why? I guess barrel harmonics are what they are. Will shoot some longer strings to confirm ES #'s but again I'm having a hard time finding more retumbo which makes me wanna ration it out. Any one know where some is? I'm on a few websites email notify list, but from what I'm hearing it's been picked up by the military and it'll be out for awhile. Last year I had zero luck with h1000 and 210 vlds but maybe because it was still breaking in under 50 rnds. Hard to go back to h1000 now that I've seen this retumbo/vld combo produce such good results. Btw can you guys tell me your brass prep preferences in your 300 RUM? Neck size, partial neck and body, or F/L size? Neck turn or anneal? 1,2,3 thou neck tension? So much to learn from you guys. I don't have nearly any local resources for long range shooting info. You guys are it. Thank you.</p></blockquote><p></p>
[QUOTE="redchinviking, post: 1659973, member: 110512"] ok Thanks for the input ballistics guy...prob overthinking the numbers, but it’s gotten me this far! I guess it’s worth a try to take that 92-92.5 out to 1000 and see if it’ll hold together but always heard that SD’s should be single digit if you want consistency at 1000. And it has held true for me up to this point. I guess for a hunting round .5 moa that percentage error can be acceptable at higher spreads from what I’m reading. Last year with the h1000/NLRAB nosler brass the ladder work was straight forward with low ES being the best groups. ES/SD went Up and down in the corresponding accuracy nodes. Pretty straight forward. Now this year the opposite is true. Still scratching my head wondering why? I guess barrel harmonics are what they are. Will shoot some longer strings to confirm ES #’s but again I’m having a hard time finding more retumbo which makes me wanna ration it out. Any one know where some is? I’m on a few websites email notify list, but from what I’m hearing it’s been picked up by the military and it’ll be out for awhile. Last year I had zero luck with h1000 and 210 vlds but maybe because it was still breaking in under 50 rnds. Hard to go back to h1000 now that I’ve seen this retumbo/vld combo produce such good results. Btw can you guys tell me your brass prep preferences in your 300 RUM? Neck size, partial neck and body, or F/L size? Neck turn or anneal? 1,2,3 thou neck tension? So much to learn from you guys. I don’t have nearly any local resources for long range shooting info. You guys are it. Thank you. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
300 Rum Load development help needed.
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