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Rifles, Reloading, Optics, Equipment
Long Range Scopes and Other Optics
tds-4 or BR reticle?
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<blockquote data-quote="woods" data-source="post: 239065" data-attributes="member: 6042"><p>Hey Billy</p><p></p><p>The TDS-4 reticle is supposed to subtend the following on a target at 100 yards:</p><p></p><p>crosshairs</p><p>1.8"</p><p>4.7"</p><p>8.0"</p><p>12.2"</p><p></p><p>If you zero at 100 yards that would mean:</p><p></p><p>100 yards - crosshairs</p><p>200 yards - 3.6" (2 x 1.8")</p><p>300 yards - 14.1" (3 x 4.7")</p><p>400 yards - 32" (4 x 8")</p><p>500 yards - 61.0" (5 x 12.2")</p><p></p><p>A 270 trajectory with a slow bullet that would more readily match this reticle like the 150 gr TSX, when zeroed at 100 yards would be:</p><p></p><p>100 yards - crosshairs</p><p>200 yards - 3.3"</p><p>300 yards - 12.1"</p><p>400 yards - 27.6"</p><p>500 yards - 50.5"</p><p></p><p>Not too close</p><p></p><p>So if you zero the same bullet at 200 yards then the RETICLE trajectory would be:</p><p></p><p>200 yards - crosshairs</p><p>300 yards - 5.4" (3 x 1.8")</p><p>400 yards - 18.8" (4 x 4.7")</p><p>500 yards - 40" (5 x 8")</p><p>600 yards - 74" (6 x 12.2")</p><p></p><p>and the BULLET trajectory would be:</p><p></p><p>200 yards - zeroed</p><p>300 yards - 7.2"</p><p>400 yards - 21"</p><p>500 yards - 42.3"</p><p>600 yards - 72.6"</p><p></p><p>Now if you went to a flatter shooting bullet at a higher velocity in the 270 then that would make the differences at the different ranges more pronounced. I have a regular TDS reticle which is made for a flatter shooter than the TDS-4 and now have it on a 30-06 shooting a 200 gr Accubond zeroed at 100 yards and it is close.</p><p></p><p>IMO, a better option is to get at Zeiss Conquest RapidZ 800 and go to their website to use their calculator to be able to set the power to put the reticle bars where it will match your specific trajectory.</p><p></p><p>Either that or get the Kahles MultiZero (I have 2) and you can set your marks to match any trajectory on any rifle you will ever own.</p></blockquote><p></p>
[QUOTE="woods, post: 239065, member: 6042"] Hey Billy The TDS-4 reticle is supposed to subtend the following on a target at 100 yards: crosshairs 1.8" 4.7" 8.0" 12.2" If you zero at 100 yards that would mean: 100 yards - crosshairs 200 yards - 3.6" (2 x 1.8") 300 yards - 14.1" (3 x 4.7") 400 yards - 32" (4 x 8") 500 yards - 61.0" (5 x 12.2") A 270 trajectory with a slow bullet that would more readily match this reticle like the 150 gr TSX, when zeroed at 100 yards would be: 100 yards - crosshairs 200 yards - 3.3" 300 yards - 12.1" 400 yards - 27.6" 500 yards - 50.5" Not too close So if you zero the same bullet at 200 yards then the RETICLE trajectory would be: 200 yards - crosshairs 300 yards - 5.4" (3 x 1.8") 400 yards - 18.8" (4 x 4.7") 500 yards - 40" (5 x 8") 600 yards - 74" (6 x 12.2") and the BULLET trajectory would be: 200 yards - zeroed 300 yards - 7.2" 400 yards - 21" 500 yards - 42.3" 600 yards - 72.6" Now if you went to a flatter shooting bullet at a higher velocity in the 270 then that would make the differences at the different ranges more pronounced. I have a regular TDS reticle which is made for a flatter shooter than the TDS-4 and now have it on a 30-06 shooting a 200 gr Accubond zeroed at 100 yards and it is close. IMO, a better option is to get at Zeiss Conquest RapidZ 800 and go to their website to use their calculator to be able to set the power to put the reticle bars where it will match your specific trajectory. Either that or get the Kahles MultiZero (I have 2) and you can set your marks to match any trajectory on any rifle you will ever own. [/QUOTE]
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tds-4 or BR reticle?
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