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<blockquote data-quote="royinidaho" data-source="post: 125801" data-attributes="member: 2011"><p><strong>Learning to dance with my big girl.....</strong></p><p></p><p>Deer season ended w/no buck being slain. Saw deer, had fun, walked a lot but no meat.</p><p></p><p>So I took the 270 AM to the range to do the drop chart thing.</p><p></p><p>I sorted the 169.5s I recently received and assigned the ones on the outter ends of the bell curve to be sighters and drop chart.</p><p></p><p>Wind was a gusty 11 MPH average worth 35%. Temp was 36*F.</p><p></p><p>This if the first time shooting prone from bipod and beanie bag rear rest. A test load of 100gr US869 gave me a 1 shot velocity of 3396 on a much warmer day. The shot went exactly where I wanted it to @ 100yds from the bench.</p><p></p><p>Upon receipt of the box of 169s and sorting, I loaded some cases that for some reason would "just" hold the bullets without being resized. (read lousy neck tension) Being lazy and just wanting to shot her I loaded 14 rounds @ 99gr US 869. I dropped a grain off of the 100grs that Kirby indicated was maximum (but I think it'll handle more if I get a wild streak and want to use up brass)</p><p></p><p>Kirby told me I'd be really close with a BC of 0.74 so I made a drop chart with a 300yd zero using the single shot with a 169gr prototype 100 yd placement. The chart goes from 300 to 1000 in 25yd increments.</p><p></p><p>Set the target @ 227 yds then 333 and finally 524. Wierd distances but the range is set up in meters to the berms.</p><p></p><p>Results:</p><p></p><p>Distance Expected Actual</p><p>227 yds +.1Mils +.12 Mils</p><p>333 -.1Mils -.1 Mils</p><p>524 -1.3Mils -1.3Mils</p><p></p><p>Then I just had to shoot at the gong. Unknown distance. Somewhere around 800 Meters. Shot twice, don't think I hit it, at least could hear no impact.</p><p></p><p>The lava rock ridge behind the gong is just over 1100 yds. To "see where the dust flies" I picked a small off colored piece of rock. Probably a foot square, ball park.</p><p></p><p>Drop chart said 4.4 Mils for 1k so I figured a 'little over 1100" would be about -5 mils, again ball park. Heck I was just looking for dust.</p><p></p><p>I centered the top of the post on the light colored rock and let her rip. To my amazement I was able to see impact in the scope (sweet) and that the impact was spot on (sweeter).</p><p></p><p>7 shots to validate the drop chart out to 524 yds and maybe even to the 1113 mark.</p><p></p><p>Lessons Learned:</p><p>When you're dancin'w/the big girl, hold her lightly.</p><p>Don't wear mechanics gloves use the wool mittins that flip back exposing bare fingers. THen you can 'feel' the trigger. The mechanic glove seemed to increase trigger pull weight.</p><p></p><p>Keep the bipod in the dirt. Its ok to have the shooting matt (double canvas, no padding) under the bipod.</p><p></p><p>If the bipod is too long, dig some dirt, don't fudge with teh beanie bag i.e., hand on top of or beneath.</p><p></p><p>After years of shooting 130s and 140s out of a 270 Win on that range, wind seems to affect the 169 no more than 1/4th of teh lighter slower bullets, maybe less. More shooting will tell.</p><p></p><p>IT seemed like the bullet got to 1113yds in about the time it takes my 338 RUM to get a 250gr to 300. Pretty amazing.</p><p></p><p>Next I'll finish up the cases and get some consistent neck tension and then play with seating depth if I have to.</p></blockquote><p></p>
[QUOTE="royinidaho, post: 125801, member: 2011"] [b]Learning to dance with my big girl.....[/b] Deer season ended w/no buck being slain. Saw deer, had fun, walked a lot but no meat. So I took the 270 AM to the range to do the drop chart thing. I sorted the 169.5s I recently received and assigned the ones on the outter ends of the bell curve to be sighters and drop chart. Wind was a gusty 11 MPH average worth 35%. Temp was 36*F. This if the first time shooting prone from bipod and beanie bag rear rest. A test load of 100gr US869 gave me a 1 shot velocity of 3396 on a much warmer day. The shot went exactly where I wanted it to @ 100yds from the bench. Upon receipt of the box of 169s and sorting, I loaded some cases that for some reason would "just" hold the bullets without being resized. (read lousy neck tension) Being lazy and just wanting to shot her I loaded 14 rounds @ 99gr US 869. I dropped a grain off of the 100grs that Kirby indicated was maximum (but I think it'll handle more if I get a wild streak and want to use up brass) Kirby told me I'd be really close with a BC of 0.74 so I made a drop chart with a 300yd zero using the single shot with a 169gr prototype 100 yd placement. The chart goes from 300 to 1000 in 25yd increments. Set the target @ 227 yds then 333 and finally 524. Wierd distances but the range is set up in meters to the berms. Results: Distance Expected Actual 227 yds +.1Mils +.12 Mils 333 -.1Mils -.1 Mils 524 -1.3Mils -1.3Mils Then I just had to shoot at the gong. Unknown distance. Somewhere around 800 Meters. Shot twice, don't think I hit it, at least could hear no impact. The lava rock ridge behind the gong is just over 1100 yds. To "see where the dust flies" I picked a small off colored piece of rock. Probably a foot square, ball park. Drop chart said 4.4 Mils for 1k so I figured a 'little over 1100" would be about -5 mils, again ball park. Heck I was just looking for dust. I centered the top of the post on the light colored rock and let her rip. To my amazement I was able to see impact in the scope (sweet) and that the impact was spot on (sweeter). 7 shots to validate the drop chart out to 524 yds and maybe even to the 1113 mark. Lessons Learned: When you're dancin'w/the big girl, hold her lightly. Don't wear mechanics gloves use the wool mittins that flip back exposing bare fingers. THen you can 'feel' the trigger. The mechanic glove seemed to increase trigger pull weight. Keep the bipod in the dirt. Its ok to have the shooting matt (double canvas, no padding) under the bipod. If the bipod is too long, dig some dirt, don't fudge with teh beanie bag i.e., hand on top of or beneath. After years of shooting 130s and 140s out of a 270 Win on that range, wind seems to affect the 169 no more than 1/4th of teh lighter slower bullets, maybe less. More shooting will tell. IT seemed like the bullet got to 1113yds in about the time it takes my 338 RUM to get a 250gr to 300. Pretty amazing. Next I'll finish up the cases and get some consistent neck tension and then play with seating depth if I have to. [/QUOTE]
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