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Rifles, Reloading, Optics, Equipment
Reloading
'Clumping' Retumbo--Kirby/anyone?
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<blockquote data-quote="jmden" data-source="post: 847321" data-attributes="member: 1742"><p>This morning at 97g Retumbo (normal load was 100g last spring with same jug at 2954fps) and -.020 instead of the normal -.015, I'm still getting pressure signs, though less. First round through dirty, cold barrel went 2824fps, then the next three went 2879, 2872, 2867 and grouped well under 1/2 MOA prone at 205 yds on paper, but the first was 2" to the R of the 3 shot group and why the low MV. ??!! But still a shadow of ejector mark on 338 Lapua Brass. This thing should be doing 2950fps with no problems.</p><p></p><p>I do have some left over Retumbo from an older 8lb. jug that I switched from last year. My load with that was 101g and 2979fps. Perhaps I should investigate if anything has happened with that. Regardless, it sure appears to me at this point in time that something happened to this lot of Retumbo over the last few months....</p></blockquote><p></p>
[QUOTE="jmden, post: 847321, member: 1742"] This morning at 97g Retumbo (normal load was 100g last spring with same jug at 2954fps) and -.020 instead of the normal -.015, I'm still getting pressure signs, though less. First round through dirty, cold barrel went 2824fps, then the next three went 2879, 2872, 2867 and grouped well under 1/2 MOA prone at 205 yds on paper, but the first was 2" to the R of the 3 shot group and why the low MV. ??!! But still a shadow of ejector mark on 338 Lapua Brass. This thing should be doing 2950fps with no problems. I do have some left over Retumbo from an older 8lb. jug that I switched from last year. My load with that was 101g and 2979fps. Perhaps I should investigate if anything has happened with that. Regardless, it sure appears to me at this point in time that something happened to this lot of Retumbo over the last few months.... [/QUOTE]
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Reloading
'Clumping' Retumbo--Kirby/anyone?
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