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Rifles, Reloading, Optics, Equipment
Reloading
'Clumping' Retumbo--Kirby/anyone?
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<blockquote data-quote="Greyfox" data-source="post: 847183" data-attributes="member: 10291"><p>I use Retumbo exclusively in my 300WM and 6,5x284. The caking at the mouth of the case has always occurred, particularly of the load is compressed. There was definitely a a change in the Retumbo formulation 2-3 years ago that required a decrease in charge of 1.5gr in my 6.5x284, from 59 to 57.5 to get my velocity of 2970 FPS. There were no pressure signs, just the velocity change. This has maintained constant for the last few lots I have purchased since then. Having read this post, I'm a little suspicious that I might have a problem as well. My 300WM loads are OK, but they have been only recently loaded up over the last couple of months. I recently shot some of my 6,5x284 ammo that was loaded two years ago and noticed a velocity increase of 30-40 FPS. My recently loaded ammo is fine. I wrote it off the higher velocity loads as lighting effects on my chronograph, but will now go back and double check it. There were no pressure signs and the loads gave the same POI and group size. If there is a change over time it's not good news.</p></blockquote><p></p>
[QUOTE="Greyfox, post: 847183, member: 10291"] I use Retumbo exclusively in my 300WM and 6,5x284. The caking at the mouth of the case has always occurred, particularly of the load is compressed. There was definitely a a change in the Retumbo formulation 2-3 years ago that required a decrease in charge of 1.5gr in my 6.5x284, from 59 to 57.5 to get my velocity of 2970 FPS. There were no pressure signs, just the velocity change. This has maintained constant for the last few lots I have purchased since then. Having read this post, I'm a little suspicious that I might have a problem as well. My 300WM loads are OK, but they have been only recently loaded up over the last couple of months. I recently shot some of my 6,5x284 ammo that was loaded two years ago and noticed a velocity increase of 30-40 FPS. My recently loaded ammo is fine. I wrote it off the higher velocity loads as lighting effects on my chronograph, but will now go back and double check it. There were no pressure signs and the loads gave the same POI and group size. If there is a change over time it's not good news. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
'Clumping' Retumbo--Kirby/anyone?
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