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Rifles, Reloading, Optics, Equipment
Reloading
Retumbo!
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<blockquote data-quote="Greyfox" data-source="post: 2488668" data-attributes="member: 10291"><p>I have been a dedicated user of Retumbo in my 6.5x284's and 300WM for many years. I get excellent accuracy, temperature stability, low ES and typically an additional 50-100FPS from loads using the faster burning H1000, H4831sc. Case fill is generally at or near 100% before pressure signs develop, and I have found with my 6.5x284's that my barrel life can be 25-50% longer, speculating that the slower burn rate lessens heat/pressure in the throat area. I do like to load fresh rounds at the start of each season, as Retumbo does have the tendency to clump up in loaded cartridges over time which, IMO, may cause occasional velocity spiking(10-30FPS). Of late, I have using the double-based powders(ie. R26,VV5XX), with the heavies like the156 Berger. They also produce excellent accuracy, high/higher velocity, and good ES but it appears that it's at the cost of more rapid throat erosion/shorter barrel life.</p><p>On of my 6.5x284's…2011 vs 2021…over 1000 shots, no change in throat. </p><p>[ATTACH]353721[/ATTACH][ATTACH]353722[/ATTACH]</p></blockquote><p></p>
[QUOTE="Greyfox, post: 2488668, member: 10291"] I have been a dedicated user of Retumbo in my 6.5x284’s and 300WM for many years. I get excellent accuracy, temperature stability, low ES and typically an additional 50-100FPS from loads using the faster burning H1000, H4831sc. Case fill is generally at or near 100% before pressure signs develop, and I have found with my 6.5x284’s that my barrel life can be 25-50% longer, speculating that the slower burn rate lessens heat/pressure in the throat area. I do like to load fresh rounds at the start of each season, as Retumbo does have the tendency to clump up in loaded cartridges over time which, IMO, may cause occasional velocity spiking(10-30FPS). Of late, I have using the double-based powders(ie. R26,VV5XX), with the heavies like the156 Berger. They also produce excellent accuracy, high/higher velocity, and good ES but it appears that it’s at the cost of more rapid throat erosion/shorter barrel life. On of my 6.5x284’s…2011 vs 2021…over 1000 shots, no change in throat. [ATTACH]353721[/ATTACH][ATTACH]353722[/ATTACH] [/QUOTE]
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