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Extreme Long Range Hunting & Shooting (ELR)
What Variable to change Wen truing my Weapon at Extended Ranges
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<blockquote data-quote="Deleted member 71114" data-source="post: 895693"><p><span style="font-size: 12px"><span style="font-family: 'Calibri'">I have seen folks tweak their systems trying to make sense of the trajectory and their programing so that the adjustments and point of impacts actually work. But they either end up with a velocity that is not true or they think the BC is better than what it's rated at.</span></span></p><p></p><p><span style="font-size: 12px"><span style="font-family: 'Calibri'">Just something I check on any new scope, doesn't matter what mfg. before or while mounted on the rifle.</span></span></p><p></p><p><span style="font-size: 12px"><span style="font-family: 'Calibri'">I have an area that has been marked with a true measured 100 yards, using a 100' tape not a laser. Then I hang a 72" carpenter's rule that has been checked with a caliper for true readings. Sounds dumb but you would be surprised how some rules of this type are off a bunch by the time you get to 72" kinda like some scope travels as fallows. </span></span></p><p></p><p><span style="font-size: 12px"><span style="font-family: 'Calibri'">Make sure the rule is hung or mounted true vertical with a level. </span></span></p><p><span style="font-size: 12px"><span style="font-family: 'Calibri'">You can also take a fine point Sharpie and mark all the mil settings using your caliper, so you're ready for moa or mil reticles for testing.</span></span></p><p><span style="font-size: 12px"><span style="font-family: 'Calibri'">The most time consuming part is setting up the first time.</span></span></p><p></p><p><span style="font-size: 12px"><span style="font-family: 'Calibri'">Now that you have the range measured and the carpenters rule checked, marked and hung true vertical, you can either take a piece of steel square stock equipped with a picatinny rail held in a vise solid ready to mount the rings and scope on or a solid gun vise of some sort for securing the complete rifle. I like the solid piece of steel stock for clamping down tight in the vise to eliminate any chance of movement with the scope.</span></span></p><p></p><p><span style="font-size: 12px"><span style="font-family: 'Calibri'">Whatever method used, secure the scope or rifle equipped with the scope while having the scope reticle aiming at the top edge of the rule while set at zero.</span></span></p><p></p><p><span style="font-size: 12px"><span style="font-family: 'Calibri'">Now turn your elevation turret and make notes as to how much every click of the turret moves on the rule. (In some cases another person with a pointer down by the rule and using radios will be helpful)l. As you adjust your scope's elevation turret pay attention to the error. Try this a few times to make sure your still at zero when dialing back up to the top of the rule in case your scope or gun may have moved while testing – it's all about good info</span></span></p><p></p><p><span style="font-size: 12px"><span style="font-family: 'Calibri'">You will see any amount of error really start to add up as you get to your max travel or 72" on the rule. Take the info you have and check with your ballistics program to change the value of your clicks in your scope info you entered into the program, </span></span></p><p></p><p><span style="font-size: 12px"><span style="font-family: 'Calibri'"><strong>Cause for all this is the tolerances in the machining of the threads and or wear in the turret travel.</strong></span></span></p><p><span style="font-size: 12px"><span style="font-family: 'Calibri'">I have seen some dumbfounded looks while doing this quick exercise, it's nice to know that when you dial in 10 or 25 mils that you really do have 10 or 25 mils not 11.5 or 28. Same goes for folks with moa adjustments a 1/4 moa is a true 1/4 moa or 10 moa's when dialed. </span></span></p><p> </p><p><span style="font-size: 12px"><span style="font-family: 'Calibri'">This simple test cleans up questionable speeds and BCs and helps with making drop charts that are true as far as corrections needed.</span></span></p><p></p><p><span style="font-size: 12px"><span style="font-family: 'Calibri'"><strong>Another thing</strong> as long as the level bubble on the scope or rifle is true, you should be able to dial the full vertical travel adjustment and travel down the rule without veering off course some, if it does move your turret/scope reticle is not plumb with gravity.</span></span></p><p></p><p><span style="font-size: 12px"><span style="font-family: 'Calibri'"><strong>It's all the little things that add up and make a big difference in time.</strong></span></span></p><p> </p><p> I do get a little long winded at times</p><p> </p><p><span style="font-size: 12px"><span style="font-family: 'Calibri'">Cheers</span></span></p><p><span style="font-family: 'Calibri'"><span style="font-size: 12px">oneshot.onehit</span></span></p></blockquote><p></p>
[QUOTE="Deleted member 71114, post: 895693"] [SIZE=3][FONT=Calibri]I have seen folks tweak their systems trying to make sense of the trajectory and their programing so that the adjustments and point of impacts actually work. But they either end up with a velocity that is not true or they think the BC is better than what it’s rated at.[/FONT][/SIZE] [SIZE=3][FONT=Calibri]Just something I check on any new scope, doesn’t matter what mfg. before or while mounted on the rifle.[/FONT][/SIZE] [SIZE=3][FONT=Calibri]I have an area that has been marked with a true measured 100 yards, using a 100’ tape not a laser. Then I hang a 72” carpenter’s rule that has been checked with a caliper for true readings. Sounds dumb but you would be surprised how some rules of this type are off a bunch by the time you get to 72” kinda like some scope travels as fallows. [/FONT][/SIZE] [SIZE=3][FONT=Calibri]Make sure the rule is hung or mounted true vertical with a level. [/FONT][/SIZE] [SIZE=3][FONT=Calibri]You can also take a fine point Sharpie and mark all the mil settings using your caliper, so you’re ready for moa or mil reticles for testing.[/FONT][/SIZE] [SIZE=3][FONT=Calibri]The most time consuming part is setting up the first time.[/FONT][/SIZE] [SIZE=3][FONT=Calibri]Now that you have the range measured and the carpenters rule checked, marked and hung true vertical, you can either take a piece of steel square stock equipped with a picatinny rail held in a vise solid ready to mount the rings and scope on or a solid gun vise of some sort for securing the complete rifle. I like the solid piece of steel stock for clamping down tight in the vise to eliminate any chance of movement with the scope.[/FONT][/SIZE] [SIZE=3][FONT=Calibri]Whatever method used, secure the scope or rifle equipped with the scope while having the scope reticle aiming at the top edge of the rule while set at zero.[/FONT][/SIZE] [SIZE=3][FONT=Calibri]Now turn your elevation turret and make notes as to how much every click of the turret moves on the rule. (In some cases another person with a pointer down by the rule and using radios will be helpful)l. As you adjust your scope’s elevation turret pay attention to the error. Try this a few times to make sure your still at zero when dialing back up to the top of the rule in case your scope or gun may have moved while testing – it’s all about good info[/FONT][/SIZE] [SIZE=3][FONT=Calibri]You will see any amount of error really start to add up as you get to your max travel or 72” on the rule. Take the info you have and check with your ballistics program to change the value of your clicks in your scope info you entered into the program, [/FONT][/SIZE] [SIZE=3][FONT=Calibri][B]Cause for all this is the tolerances in the machining of the threads and or wear in the turret travel.[/B][/FONT][/SIZE] [SIZE=3][FONT=Calibri]I have seen some dumbfounded looks while doing this quick exercise, it’s nice to know that when you dial in 10 or 25 mils that you really do have 10 or 25 mils not 11.5 or 28. Same goes for folks with moa adjustments a 1/4 moa is a true 1/4 moa or 10 moa's when dialed. [/FONT][/SIZE] [FONT=Calibri][SIZE=3][/SIZE][/FONT] [SIZE=3][FONT=Calibri]This simple test cleans up questionable speeds and BCs and helps with making drop charts that are true as far as corrections needed.[/FONT][/SIZE] [SIZE=3][FONT=Calibri][B]Another thing[/B] as long as the level bubble on the scope or rifle is true, you should be able to dial the full vertical travel adjustment and travel down the rule without veering off course some, if it does move your turret/scope reticle is not plumb with gravity.[/FONT][/SIZE] [SIZE=3][FONT=Calibri][B]It’s all the little things that add up and make a big difference in time.[/B][/FONT][/SIZE] [B][FONT=Calibri][SIZE=3][/SIZE][/FONT][/B] I do get a little long winded at times [SIZE=3][FONT=Calibri]Cheers[/FONT][/SIZE] [FONT=Calibri][SIZE=3]oneshot.onehit[/SIZE][/FONT] [/QUOTE]
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What Variable to change Wen truing my Weapon at Extended Ranges
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