Magnification Effects on BDC Hash Marks
I had an interesting conversation with a fella today on the range. He noticed that I had a Burris Fullfield II mounted on my rifle and he asked me how I liked the BDC recticle. He said that he had the same scope and he found that the BDC was most effective on 9x power because the point of aim of the hash marks changed as he increased and decreased magnification.
To show me what he meant he had me put the crosshair on the parallel target bar at 3x magnification and then turn it up to 14x magnification. The crosshair didn't change position however the hash marks moved up the target changing the point of aim for them. I tried it with my Zeiss Conquest and it was the same thing.
I've had good success using the hash marks out to 500 yards with my 30.06 and the Burris scope but I've always had it on 14x magnification. I haven't tried the Zeiss yet. The ballistic charts show +/- for the hash marks for different calibers and bullets but I don't recall ever seeing anything about magnification being factored in anywhere.
I have to do some research on this but in the mean time........Does anyone know offhand if there is a desired magnification, whether maximum, minimum or somewhere in between, that a BDC recticle is the most accurate?
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