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<blockquote data-quote="Ty89m" data-source="post: 901874" data-attributes="member: 75839"><p>I've just built my first semi-precision rifle (18" AR-15) and purchased my first high end optic (Leupold Mark 6 3-18) and am having a difficult time understanding "parallel/level with bore"</p><p></p><p>I'm using a Bobro 34mm one piece mount. For my first attempt at aligning the reticle, I leveled the rifle by using a spirit level on the flat top of rcvr, and then used a plumb bob to align the reticle with the plumb line. Basically, wouldn't this be good enough? I'm about to order either a scope or rail mounted can't indicator, and figured I'd once again use the cant indicator to level rifle, and readjust scope so it's aligned with the vertical plumb line. I wanted to add, the base of my rcvr and base of one pc mount are not level with each other, does that really matter as long as the reticle is plumb? Why do I see mention of aligning reticle with the bore, for example, using the EXD tool? Am I overthinking this? </p><p></p><p>My thought is, buy the optic mounted anti can't indicator, level rifle, hang plum line, align vertical cross hair with line, the adjust can't indicator unil it shows level when reticle is level with plumb line. Is that good enough out to 600? I doubt the rcvr/barrel/mount is perfectly true, but that's not really something I can fix. </p><p></p><p>I basically just want to get this done right so I'm confident that any misses are my own fault and not from a misaligned reticle. Should I invest in something like the EXD tool? Or will my cant indicator plus plumb line get me darn close? Seems as long as the vertical cross hair tracks straight up when adjusting elevation, not much else should matter. </p><p></p><p>Sorry for the indirect question, but this reticle leveling thing is driving me nuts!</p><p></p><p>Thanks!</p><p></p><p>Ty</p></blockquote><p></p>
[QUOTE="Ty89m, post: 901874, member: 75839"] I've just built my first semi-precision rifle (18" AR-15) and purchased my first high end optic (Leupold Mark 6 3-18) and am having a difficult time understanding "parallel/level with bore" I'm using a Bobro 34mm one piece mount. For my first attempt at aligning the reticle, I leveled the rifle by using a spirit level on the flat top of rcvr, and then used a plumb bob to align the reticle with the plumb line. Basically, wouldn't this be good enough? I'm about to order either a scope or rail mounted can't indicator, and figured I'd once again use the cant indicator to level rifle, and readjust scope so it's aligned with the vertical plumb line. I wanted to add, the base of my rcvr and base of one pc mount are not level with each other, does that really matter as long as the reticle is plumb? Why do I see mention of aligning reticle with the bore, for example, using the EXD tool? Am I overthinking this? My thought is, buy the optic mounted anti can't indicator, level rifle, hang plum line, align vertical cross hair with line, the adjust can't indicator unil it shows level when reticle is level with plumb line. Is that good enough out to 600? I doubt the rcvr/barrel/mount is perfectly true, but that's not really something I can fix. I basically just want to get this done right so I'm confident that any misses are my own fault and not from a misaligned reticle. Should I invest in something like the EXD tool? Or will my cant indicator plus plumb line get me darn close? Seems as long as the vertical cross hair tracks straight up when adjusting elevation, not much else should matter. Sorry for the indirect question, but this reticle leveling thing is driving me nuts! Thanks! Ty [/QUOTE]
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