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Rifles, Reloading, Optics, Equipment
Reloading
Baffling Reults, Please Help!
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<blockquote data-quote="bobh918" data-source="post: 581440" data-attributes="member: 15833"><p>I was working on a couple of loads yesterday for my 300RUM. I am trying out the 230 Berger Targets and was shooting two loads of 84.2gr & 84.5gr of H1000 loaded .010 off the lands, once fired remington cases all full length sized and shoulders bumped, and cci 250 primers. I ran six shots down a clean barrel of 84.2gr as sighters at 200yds. Move target out to 400yds and proceed to shoot a five shot group with each load of 84.2gr & 84.5gr over the chronograph. I let the barrel cool after the six sighters and these were my results:</p><p> </p><p> <u>84.2gr</u></p><p>shot 1 - 2916 fps</p><p>shot 2 - 2889</p><p>shot 3 - 2861</p><p>shot 4 - 2857</p><p>shot 5 - 2858</p><p> </p><p>All shots were fired one after the other. After the first string, I let the barrel cool to fire the 84.5gr group.</p><p> </p><p><u>84.5gr</u></p><p>shot 1 - 2909 fps</p><p>shot 2 - 2875</p><p>shot 3 - 2865</p><p>shot 4 - 2867</p><p>shot 5 - 2873</p><p> </p><p>Temperature was about 50* F at 1600ft elevation. My question is, why would my velocities be dropping? Shouldn't they be increasing, especially firing one after the other? All charges were double checked on weight before dumped into the case. This rifle is a rem 700 trued action with a 30" Kreiger HV taper barrel. If anybody might have some thoughts or theories, please do share. I have not gone out to try these loads again to see if it repeats the same results yet. Thanks!!</p></blockquote><p></p>
[QUOTE="bobh918, post: 581440, member: 15833"] I was working on a couple of loads yesterday for my 300RUM. I am trying out the 230 Berger Targets and was shooting two loads of 84.2gr & 84.5gr of H1000 loaded .010 off the lands, once fired remington cases all full length sized and shoulders bumped, and cci 250 primers. I ran six shots down a clean barrel of 84.2gr as sighters at 200yds. Move target out to 400yds and proceed to shoot a five shot group with each load of 84.2gr & 84.5gr over the chronograph. I let the barrel cool after the six sighters and these were my results: [U]84.2gr[/U] shot 1 - 2916 fps shot 2 - 2889 shot 3 - 2861 shot 4 - 2857 shot 5 - 2858 All shots were fired one after the other. After the first string, I let the barrel cool to fire the 84.5gr group. [U]84.5gr[/U] shot 1 - 2909 fps shot 2 - 2875 shot 3 - 2865 shot 4 - 2867 shot 5 - 2873 Temperature was about 50* F at 1600ft elevation. My question is, why would my velocities be dropping? Shouldn't they be increasing, especially firing one after the other? All charges were double checked on weight before dumped into the case. This rifle is a rem 700 trued action with a 30" Kreiger HV taper barrel. If anybody might have some thoughts or theories, please do share. I have not gone out to try these loads again to see if it repeats the same results yet. Thanks!! [/QUOTE]
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Baffling Reults, Please Help!
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