Longrange blog 265: How to use a BDC better

Demonstrating how to use a BDC across changing weather.
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The math for the BDC corrections shown are:
BDC calibration vs actual weather divided by significant change multiplied by correction value.

Example at LRProficiency test one:
970 hPa calibration - 1020 hPa weather = 50 hPa difference : 30 hPa significant change = appr 1.5 significant x 5 m correction value = add appr 8 meters range correction to BDC due higher air pressure.
(Just watch the film, it's alot easier than it looks on paper).


Presenting the THLR Hybrid reticle, made for those who wishes to use the same scope for everything.

Music, standard license from Premiumbeat.com:
"Will You Follow Me" by Tiny Music
"Out of the Woods" by Allegory Music