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Rifles, Reloading, Optics, Equipment
Reloading
Double digit ES
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<blockquote data-quote="Tumbleweed" data-source="post: 676913" data-attributes="member: 9281"><p>I've been fighting an ES problem working up a load for a friend in 300Win. We're using 215 hybrids and we started with Retumbo. First of all the load data was way off for Retumbo and we got a sticky bolt at relatively low velocity. As in everything else I've loaded Retumbo for, it had wide ES numbers too. Switched to H1000 and did a lot of load testing. In this rifle it did not like H1000 either, never had any ES's under 17fps consistently. Could not find the .5 to .75 moa accuracy we were after either. Out of desperation and wanting to stay with Hodgdon's extreme powders we tried H4831SC. I quickly saw the ES shrink way down and accuracy immediately improved. I realized that we had 3 firings on most of the cases so I annealed as well. Picky as I am, it wasn't quite good enough. I switched from Fed215GM primers to CCI 250's and shot a .5 moa group at 300 yards running 2800 fps with very low ES. Bumped up the load .5 grains to max for this rifle and shot 3 with an average of 2834fps and an ES of 6. The biggest contributor to the ES problem in this case was definately the powder. This week I will stretch to 750 yards and see how she does. You may just need to get away from Retumbo and find what your rifle likes.</p></blockquote><p></p>
[QUOTE="Tumbleweed, post: 676913, member: 9281"] I've been fighting an ES problem working up a load for a friend in 300Win. We're using 215 hybrids and we started with Retumbo. First of all the load data was way off for Retumbo and we got a sticky bolt at relatively low velocity. As in everything else I've loaded Retumbo for, it had wide ES numbers too. Switched to H1000 and did a lot of load testing. In this rifle it did not like H1000 either, never had any ES's under 17fps consistently. Could not find the .5 to .75 moa accuracy we were after either. Out of desperation and wanting to stay with Hodgdon's extreme powders we tried H4831SC. I quickly saw the ES shrink way down and accuracy immediately improved. I realized that we had 3 firings on most of the cases so I annealed as well. Picky as I am, it wasn't quite good enough. I switched from Fed215GM primers to CCI 250's and shot a .5 moa group at 300 yards running 2800 fps with very low ES. Bumped up the load .5 grains to max for this rifle and shot 3 with an average of 2834fps and an ES of 6. The biggest contributor to the ES problem in this case was definately the powder. This week I will stretch to 750 yards and see how she does. You may just need to get away from Retumbo and find what your rifle likes. [/QUOTE]
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Double digit ES
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