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Allen Mag Shooters Group
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<blockquote data-quote="royinidaho" data-source="post: 127810" data-attributes="member: 2011"><p><strong>Well, I\'ll think I\'ll do what Kirby says from now on......</strong></p><p></p><p>Got some shooting time on the 270 AM today.</p><p></p><p>Zero'd @ 300yds then shot @ 500.</p><p></p><p>The Conditions:</p><p></p><p>Today's temp. was 36* w/2mph wind from 29* and was shooting towards 0*.</p><p></p><p>Humidity was 96% w/fog/mist so you couldn't range to 300 yds @ times. Just kind of a mist in the air.</p><p></p><p>Hg was 25.569 here and 30.009 @ Sea Level.</p><p></p><p>I don't know what all of this mean but I think bullets should have a lower BC on days like today.</p><p></p><p>Loads:</p><p></p><p>169RBBT ahead of 99gr US869 and Fed 215 GM primers. MV was 3275 the other day when I chrono'd this load.</p><p></p><p>195RBBT ahead of 97gr US869 and Fed 215 GM primers. MV was 3200 the other day when I chrono'd this load.</p><p></p><p>"The other day" was 4* warmer than today.</p><p></p><p>My computer gen'd drop charts for both bullets track together to 500yds.</p><p></p><p>There is no more than 0.2 MILs difference out to 1000yds.</p><p></p><p>At 100yds both loads for all practical purposes grouped together.</p><p></p><p>I used the 169s to accurately zero @ 300 and fired 1 195gr load to verify that it grouped with the 169s. It did.</p><p></p><p>I went to 500 yds with the 195s and grouped well enough to show that it was shooting 0.1 Mils higher than calculated. Group was nearly in the center of the 1st Mil dot instead of -1.1 mils which the bottom edge of that dot.</p><p></p><p>I had no 169s to shoot at 500 but they were spot on (-1.1 Mils low) at that distance the other day.</p><p></p><p>If I'm shooting accurately enough the 195 may be 0.1 Mil (~2") flatter than the 169 @ 500. One more drop chart check w/the 195s @ 600 and 1089 (that's where the gong is) and I'll have Rock ready to throw.......lead.</p><p></p><p>My problem is I have the same level of confidence with "Pink" (338 RUM) as I do with "The Rock" (270 AM)</p><p></p><p>Pink shoots a bit of a rainbow with the 300 SMKs @ 27XX but she's spot on. The AM is steadier on the bipod and most probably a bit better to shoot out towards 1K (10lbs vs 11.8 lbs). Wo is me, decisions, decisions, decisions. Guess I'll have to make more rules. W/a straight 16X on the AM and a 4.5-14 on the 338 I guess it depends on if I walk &amp; stalk or set up a hide.</p><p></p><p>RE: Listening to Kirby. He said not to turn the necks. Hell, even I knew that didn't sound right. /ubbthreads/images/graemlins/blush.gif Yeh, right /ubbthreads/images/graemlins/frown.gif</p><p></p><p>If I ever turn 'em again I'll just shine them up enough to satisfy my "tinkeritus). Neck tension seems to be important. /ubbthreads/images/graemlins/blush.gif</p><p></p><p>I won't neck turn the next batch but it may be awhile before I wear these out as the above listed loads show no no noticeable primer pocket expansion or extraction pressure. After tossing the cases w/too little neck tension I have 15 out of the original 20.</p><p></p><p>I'll work out ALL the bugs w/these cases before I prep the other 100 or so.</p></blockquote><p></p>
[QUOTE="royinidaho, post: 127810, member: 2011"] [b]Well, I\'ll think I\'ll do what Kirby says from now on......[/b] Got some shooting time on the 270 AM today. Zero'd @ 300yds then shot @ 500. The Conditions: Today's temp. was 36* w/2mph wind from 29* and was shooting towards 0*. Humidity was 96% w/fog/mist so you couldn't range to 300 yds @ times. Just kind of a mist in the air. Hg was 25.569 here and 30.009 @ Sea Level. I don't know what all of this mean but I think bullets should have a lower BC on days like today. Loads: 169RBBT ahead of 99gr US869 and Fed 215 GM primers. MV was 3275 the other day when I chrono'd this load. 195RBBT ahead of 97gr US869 and Fed 215 GM primers. MV was 3200 the other day when I chrono'd this load. "The other day" was 4* warmer than today. My computer gen'd drop charts for both bullets track together to 500yds. There is no more than 0.2 MILs difference out to 1000yds. At 100yds both loads for all practical purposes grouped together. I used the 169s to accurately zero @ 300 and fired 1 195gr load to verify that it grouped with the 169s. It did. I went to 500 yds with the 195s and grouped well enough to show that it was shooting 0.1 Mils higher than calculated. Group was nearly in the center of the 1st Mil dot instead of -1.1 mils which the bottom edge of that dot. I had no 169s to shoot at 500 but they were spot on (-1.1 Mils low) at that distance the other day. If I'm shooting accurately enough the 195 may be 0.1 Mil (~2") flatter than the 169 @ 500. One more drop chart check w/the 195s @ 600 and 1089 (that's where the gong is) and I'll have Rock ready to throw.......lead. My problem is I have the same level of confidence with "Pink" (338 RUM) as I do with "The Rock" (270 AM) Pink shoots a bit of a rainbow with the 300 SMKs @ 27XX but she's spot on. The AM is steadier on the bipod and most probably a bit better to shoot out towards 1K (10lbs vs 11.8 lbs). Wo is me, decisions, decisions, decisions. Guess I'll have to make more rules. W/a straight 16X on the AM and a 4.5-14 on the 338 I guess it depends on if I walk & stalk or set up a hide. RE: Listening to Kirby. He said not to turn the necks. Hell, even I knew that didn't sound right. [img]/ubbthreads/images/graemlins/blush.gif[/img] Yeh, right [img]/ubbthreads/images/graemlins/frown.gif[/img] If I ever turn 'em again I'll just shine them up enough to satisfy my "tinkeritus). Neck tension seems to be important. [img]/ubbthreads/images/graemlins/blush.gif[/img] I won't neck turn the next batch but it may be awhile before I wear these out as the above listed loads show no no noticeable primer pocket expansion or extraction pressure. After tossing the cases w/too little neck tension I have 15 out of the original 20. I'll work out ALL the bugs w/these cases before I prep the other 100 or so. [/QUOTE]
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