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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Throat length, does it really matter that much?
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<blockquote data-quote="Fiftydriver" data-source="post: 1003232" data-attributes="member: 10"><p>Just as a side note, I took that rifle out this morning before the rain hit and it took me a grand total of 13 shots to get the rifle dialed in and drop chart proven. Let me explain, bore sighted the rifle at 1040 yards. Took three shots to get point of impact to match point of aim at this range. At 1040 yards, I hit two different 1/3 moa sized target rocks with two shots.</p><p> </p><p>Customer wanted to zero the rifle at 200 yards and use dial up method for shooting. So, set the vertical adjustment turret to zero, ran the numbers or the conditions and vital performance numbers for that rifle/load. IT told me that with a 200 yard zero, the scope would need 19.9 moa to be dead on at 1040 yards.</p><p> </p><p>So, I took 20 moa out of the vertical adjustment and reset the zero on the turret.</p><p> </p><p>Ranged a 1/4 moa sized rock at 673 yards. Ran the numbers. Dial up was 9.9 moa, ran the turret up 10 moa. First shot clipped the top edge of the rock, second shot turned it to gravel. The two shots were under 3" ctc.</p><p> </p><p>Returned the turret to zero. </p><p> </p><p>Ranged a rock at 887 yards. Dial up was 15.5 moa. Cranked that in. First shot clipped the right edge of the 1/3 moa sized target rock. Second shot clipped the top edge.</p><p> </p><p>Rezeroed the turret.</p><p> </p><p>Ranged another target rock, this one a bit bigger, roughly 1 moa long by 1/2 moa tall, at 911 yards. Dial up was 16.2 moa, cranked in 16.25 moa. First shot landed about 1/2 moa high of center of the rock. Recoil felt funny to me, did not come smooth straight back like normal. Took a confirming shot and broke the target rock.</p><p> </p><p>Rezeroed the turret.</p><p> </p><p>Went back to the 1040 yard target distance. Dialed up the 20 moa. First shot landed on the bottom center edge of the 1/2 moa sized target rock. Second shot clipped the top left edge of the same target.</p><p> </p><p>Drop chart was dead on from 671 to 1040 yards with less then 15 rounds down the barrel. I will test it at 200, 400 and 500 yards and also at 1200 and 1500 if I have time but its amazing how fast and easy it is to set up the drops with the equipment we have these days in computers and known ballistic data for our bullets. We are pretty lucky to be playing in our sport today!!!</p></blockquote><p></p>
[QUOTE="Fiftydriver, post: 1003232, member: 10"] Just as a side note, I took that rifle out this morning before the rain hit and it took me a grand total of 13 shots to get the rifle dialed in and drop chart proven. Let me explain, bore sighted the rifle at 1040 yards. Took three shots to get point of impact to match point of aim at this range. At 1040 yards, I hit two different 1/3 moa sized target rocks with two shots. Customer wanted to zero the rifle at 200 yards and use dial up method for shooting. So, set the vertical adjustment turret to zero, ran the numbers or the conditions and vital performance numbers for that rifle/load. IT told me that with a 200 yard zero, the scope would need 19.9 moa to be dead on at 1040 yards. So, I took 20 moa out of the vertical adjustment and reset the zero on the turret. Ranged a 1/4 moa sized rock at 673 yards. Ran the numbers. Dial up was 9.9 moa, ran the turret up 10 moa. First shot clipped the top edge of the rock, second shot turned it to gravel. The two shots were under 3" ctc. Returned the turret to zero. Ranged a rock at 887 yards. Dial up was 15.5 moa. Cranked that in. First shot clipped the right edge of the 1/3 moa sized target rock. Second shot clipped the top edge. Rezeroed the turret. Ranged another target rock, this one a bit bigger, roughly 1 moa long by 1/2 moa tall, at 911 yards. Dial up was 16.2 moa, cranked in 16.25 moa. First shot landed about 1/2 moa high of center of the rock. Recoil felt funny to me, did not come smooth straight back like normal. Took a confirming shot and broke the target rock. Rezeroed the turret. Went back to the 1040 yard target distance. Dialed up the 20 moa. First shot landed on the bottom center edge of the 1/2 moa sized target rock. Second shot clipped the top left edge of the same target. Drop chart was dead on from 671 to 1040 yards with less then 15 rounds down the barrel. I will test it at 200, 400 and 500 yards and also at 1200 and 1500 if I have time but its amazing how fast and easy it is to set up the drops with the equipment we have these days in computers and known ballistic data for our bullets. We are pretty lucky to be playing in our sport today!!! [/QUOTE]
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Throat length, does it really matter that much?
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