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Nikon BDC |
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brilite
Optics GrassHopper Joined: October/29/2009 Location: Virginia Status: Offline Points: 31 |
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Posted: November/04/2009 at 21:16 |
Hello,
My Nikon scope with a BDC reticle is zeroed at the highest power (9). Is it true that the BDC function will only work properly at that highest power?
Thanks,
Brian
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pyro6999
Optics Retard OT TITAN Joined: December/22/2006 Location: North Dakota Status: Offline Points: 22034 |
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here is what you are looking for.
http://www.opticstalk.com/forum_posts.asp?fid=1&tid=4029 Edited by pyro6999 - November/04/2009 at 22:13 |
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They call me "Boots"
375H&H Mag: Yeah, it kills stuff "extra dead" 343 we will never forget God Bless Chris Ledoux "good ride cowboy" |
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3_tens
Optics Jedi Master Joined: January/08/2007 Location: Oklahoma Status: Offline Points: 7853 |
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The prescribed drops will only be for full magnification. Depending on the caliber and rifle sometimes a slightly lower power may match your circumstance. You need to know exactly what your ammunition is doing to know where the best match may be. This calculation is what in done with the Zeiss ballistics program when used with the Z-600 or Z-800
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Folks ain't got a sense of humor no more. They don't laugh they just get sore.
Need to follow the rules. Just hard to determine which set of rules to follow Now the rules have changed again. |
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3_tens
Optics Jedi Master Joined: January/08/2007 Location: Oklahoma Status: Offline Points: 7853 |
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It will only work at any power if the Reticle is in the first focal plane and not if it is in the 2nd focal plain like the Nikon and most American scopes
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Folks ain't got a sense of humor no more. They don't laugh they just get sore.
Need to follow the rules. Just hard to determine which set of rules to follow Now the rules have changed again. |
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pyro6999
Optics Retard OT TITAN Joined: December/22/2006 Location: North Dakota Status: Offline Points: 22034 |
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http://www.nikonusa.com/fileuploads/pdfs/BDC_manual.pdf
this is the booklet that comes in the box ( mine did any way) and to me its some what vague, but i guess if you read it correctly they kinda spell it out for you by saying things like "dont change the power setting on your scope at this time, and " maybe use a dag of nail polish to mark the proper power" etc etc... hope this stuff helps. i myself ignore the bdc one the team primos i own. |
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They call me "Boots"
375H&H Mag: Yeah, it kills stuff "extra dead" 343 we will never forget God Bless Chris Ledoux "good ride cowboy" |
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dls56
Optics GrassHopper Joined: April/24/2008 Location: Virginia Status: Offline Points: 49 |
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My first bullet drop compensating reticle is in a 4X12 Leupold LR. Using it on full power caused for some odd yardages, LOL. My next BDC is in a Zeiss Conquest the Rapid-Z 600, this is when I learned the better way to use this type of reticle, by adhering to their computer program it gave me the proper magnification for the bullets trajectory to mirror closely too even (100 yard) increments. Using known trajectory, a tape measure, several rounds, and a range finder it was possible to establish a magnification setting for the 4X12 that matches closely to 100 yard increments.
I'm a huge fan of BDC and additionally have a Burris Fullfield II with one and recently ordered a Nitrex with one. Ironically my .204 Ruger wears a 5X20 Monarch with a duplex that I can knock out a varmint at almost any range with just by instinctively (tons of use) knowing how much too hold over and as always the good old Kentucky windage.
I'll establish yardage at recognizable places in the fields and use the BDC accordingly, it is a nice compliment and has proved to be nearly as accurate as counting clicks only instantaneous.
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