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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Diagnosing Issue still- advice please
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<blockquote data-quote="BrentM" data-source="post: 779277" data-attributes="member: 61747"><p>Shot from a bench rest. It was clean and shot the tighter at 7 thru 10 rounds. 15-19 were at 200 on right side, and 20-25 on the left side.</p><p> </p><p>Lapau brass (same lot, shot 2x), neck sized with .002 bushing, concentricity corrected, berger VLD hunting 140, .075 off lands, retumbo powder. Action screws torqued properly, etc.</p><p> </p><p>The fact that the rounds moved up 4.5" at 200 yards with exact same load doesn't surprise you guys? I am very surprised it started shooting high all of the sudden. rounds 15-19 are by a ruler 4.5" lower. That is just weird. I didn't touch the scope settings yet, not even the power, just the parallax.</p><p> </p><p>Before I suspected the scope issue or some other issue I could group this rifle fine at 200 with less than .5 MOA. However, I kept having a verticle flyer issues here and there and point of impact changes that made no sense. This is after a scope bump. </p><p> </p><p>Another thing that surprised was the last round (25) impact that was 2.25" lower than 20 and 21. </p><p> </p><p>I have talked to Night Force and their customer service so far has been very good. It will be 4 weeks before any repair could be made so I am still trying to figure out if it is my base, mounts, scope, rifle, me etc. before sending it in. I am not sure I see any issue from shooter point of view but you never know I guess. Put it this way, I have never had a POI issue changes of 4.5" in my life based on technique. When I was shooting this rifle at 800 yards I consistently grouped .5 MOA....4x4 groups from a bipod and rear bag. A bench would have been better.</p></blockquote><p></p>
[QUOTE="BrentM, post: 779277, member: 61747"] Shot from a bench rest. It was clean and shot the tighter at 7 thru 10 rounds. 15-19 were at 200 on right side, and 20-25 on the left side. Lapau brass (same lot, shot 2x), neck sized with .002 bushing, concentricity corrected, berger VLD hunting 140, .075 off lands, retumbo powder. Action screws torqued properly, etc. The fact that the rounds moved up 4.5" at 200 yards with exact same load doesn't surprise you guys? I am very surprised it started shooting high all of the sudden. rounds 15-19 are by a ruler 4.5" lower. That is just weird. I didn't touch the scope settings yet, not even the power, just the parallax. Before I suspected the scope issue or some other issue I could group this rifle fine at 200 with less than .5 MOA. However, I kept having a verticle flyer issues here and there and point of impact changes that made no sense. This is after a scope bump. Another thing that surprised was the last round (25) impact that was 2.25" lower than 20 and 21. I have talked to Night Force and their customer service so far has been very good. It will be 4 weeks before any repair could be made so I am still trying to figure out if it is my base, mounts, scope, rifle, me etc. before sending it in. I am not sure I see any issue from shooter point of view but you never know I guess. Put it this way, I have never had a POI issue changes of 4.5" in my life based on technique. When I was shooting this rifle at 800 yards I consistently grouped .5 MOA....4x4 groups from a bipod and rear bag. A bench would have been better. [/QUOTE]
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Diagnosing Issue still- advice please
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