Just type in BC calculator in your search bar there are lots, some are free, some are junk, some you pay for. Find a good reloading manual Speer, Nosler, Hornady etc. and do a bit of reading and looking at the back of the book and you will figure it out pretty quick.
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Trades I would interested in:
- Sightron rifle scopes, 4.5x14x42mm or 4x16x42mm
especially! with the HHR reticle. (no duplex pls.)
- older 6x fixed scopes with fine X or target dot.
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