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Posted: 6/25/2013 5:42:28 AM EDT
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I was looking at the Nikon M-223 2-8x scope with BDC for a 3-gun rifle until I learned that the BDC is built around a Winchester 56-grain poly-tipped bullet. I'm having a hard time wrapping my head around the market for these BDC reticles given that they all seem to be built for one specific bullet weight and velocity. Seems very limiting for something like an AR where you might be shooting multiple different kinds of ammo for which the BDC would only be valid for one.
Am I missing something? |
The reticle is set for that particular bullet from factory. If you choose any other load it just slightly changes you poi within each reticle. Nikon has a really cool online tool wehre you put in the load your using(bullet brand,type,weight,bc,muzzle velocity,zero distance,humidity,temp,wind ect.) and it will tell you where your round will hit within each bdc reticle. It has a pretty big list of factory loads that you buy at the store and tons of bullets to make custom loads. I have used several different loads ranging from cheap American Eagle fmj to custom loads with hornady 69gr bthp's and if i take the time to put all the data into the online tool it works out very well. Ive had no problem hitting steel plates at 500 yards without evern needing to guess holdover or spinning dials. You can checkout the nikkon bdc calculator online and play with it before you buy anything. Hope that helps. 
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| All BDC reticles & custom cut turrents are like that & made for a specific round (bullet, load, etc) at specific temp, elevation, etc. Sounds like you need click value turrnets & a good software program where you can enter your specific data (for each load, etc) & get your dope. |
| The biggest thing folks need to ask themselves revolves around the "law of dimishing returns". If your BDC will work to allow hits on 10" gongs at 300yds with x, y, and z loads, then good, you can hit the size target at what range and closer you want to hit. If you are like Stamp Collector and Me (I am speaking for ya brother but I think you'll agree), and you are shooting at 4" clays at 800yds with a, b, and c loads then you need to up the level of prescision. A BDC may work for load A, but at those ranges, you will likely have to account for all of the multiple atmospheric conditions / altitude changes etc etc and thus a mil dot type retical and holds. The upside of a BDC system is that the math is "done" for you and all you have to do is hold and shoot, the upside of knowing your load / hold combination is accuracy at range and knowing better how the overall system works. |
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