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Rifles, Reloading, Optics, Equipment
Reloading
ES/SD During Initial Load Development
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<blockquote data-quote="Tiny Tim" data-source="post: 2723299" data-attributes="member: 87887"><p>Was doing a seating depth test with 215 Target Hybrids in a 300 Rum. 0.015, 0.040, .045, 0.60 off lands. 80 gr H1000.Federal 215 GMM in virgin ADG brass. No prep, loaded and shot. Just fire forming before load development. ES 17/SD6 @0.015. Avg 2776 fps. Each increase in depth resulted in 16 fps, 10 fps, &10 fps reduction in velocity respectively. ES/SD became 37-50 fps and SD 12-22 fps. 0.045 resulted in .5 moa. All others hovered around 1 moa.i find the numbers confusing. Is it possible I randomly loanded on a velocity node when .015 off. Seems odd that ES should change so drastically across the board if not. I will likely test .015 and .045 in a ladder later. 1 moa with low ES/SD is better than .5 moa with terrible ES/SD at distance. Sorry to ramble. Any advice?</p></blockquote><p></p>
[QUOTE="Tiny Tim, post: 2723299, member: 87887"] Was doing a seating depth test with 215 Target Hybrids in a 300 Rum. 0.015, 0.040, .045, 0.60 off lands. 80 gr H1000.Federal 215 GMM in virgin ADG brass. No prep, loaded and shot. Just fire forming before load development. ES 17/SD6 @0.015. Avg 2776 fps. Each increase in depth resulted in 16 fps, 10 fps, &10 fps reduction in velocity respectively. ES/SD became 37-50 fps and SD 12-22 fps. 0.045 resulted in .5 moa. All others hovered around 1 moa.i find the numbers confusing. Is it possible I randomly loanded on a velocity node when .015 off. Seems odd that ES should change so drastically across the board if not. I will likely test .015 and .045 in a ladder later. 1 moa with low ES/SD is better than .5 moa with terrible ES/SD at distance. Sorry to ramble. Any advice? [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
ES/SD During Initial Load Development
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