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Rifles, Reloading, Optics, Equipment
Reloading
Extreme spread
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<blockquote data-quote="Guest" data-source="post: 151294"><p>What do you look for when your looking for extreme spread. I ran some loads thru the crony today looking for a node. Not looking for group but looking for the smallest extreme spread. Its worse than looking for the right combo of load, bullet, Col. </p><p>of the # rounds I fired I got the following info.</p><p>#1, 3210</p><p>#2, 3142</p><p>#3, 3177</p><p>#4, 3190</p><p>#5, 3182</p><p>#6, 3160</p><p>#7, 3174</p><p>#8, 3150</p><p>#9, 3148</p><p>The crony didn't record the actual #5 so I ended up with only 9 acutal recorded round.</p><p>3140- Low</p><p>3210+ High</p><p>3170 Average</p><p>68.36 Extreme spread</p><p>21.00 SD</p><p>yesterday I shot 10 rounds thru the gun, A 700 Remington, blue printed, 26" Hart barrel .300 Ultra Mag with all the bells and whistles and I ended up with an 82.XX ES 93 grains of Retumbo, Nosler AB Federal 215M primer and Remington Case.</p><p>I'm using 93.3 grains of Retumbo, Federal 215M primer and a 200 Nosler AB. Maybe I'm looking for the holy grail but I'm trying to get my ES down to at least single digits. Am I dreaming. I'm getting a bit over 1/2" groups and am trying to get them down to 1/4" if possible but its going to take a single digit ES to do it. Is Retumbo the wrong powder to use or would differant primers do the trick. I sure would like to get this thing dialed in before the barrels gone. /ubbthreads/images/graemlins/crazy.gif</p></blockquote><p></p>
[QUOTE="Guest, post: 151294"] What do you look for when your looking for extreme spread. I ran some loads thru the crony today looking for a node. Not looking for group but looking for the smallest extreme spread. Its worse than looking for the right combo of load, bullet, Col. of the # rounds I fired I got the following info. #1, 3210 #2, 3142 #3, 3177 #4, 3190 #5, 3182 #6, 3160 #7, 3174 #8, 3150 #9, 3148 The crony didn't record the actual #5 so I ended up with only 9 acutal recorded round. 3140- Low 3210+ High 3170 Average 68.36 Extreme spread 21.00 SD yesterday I shot 10 rounds thru the gun, A 700 Remington, blue printed, 26" Hart barrel .300 Ultra Mag with all the bells and whistles and I ended up with an 82.XX ES 93 grains of Retumbo, Nosler AB Federal 215M primer and Remington Case. I'm using 93.3 grains of Retumbo, Federal 215M primer and a 200 Nosler AB. Maybe I'm looking for the holy grail but I'm trying to get my ES down to at least single digits. Am I dreaming. I'm getting a bit over 1/2" groups and am trying to get them down to 1/4" if possible but its going to take a single digit ES to do it. Is Retumbo the wrong powder to use or would differant primers do the trick. I sure would like to get this thing dialed in before the barrels gone. [img]/ubbthreads/images/graemlins/crazy.gif[/img] [/QUOTE]
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