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BCs for cast

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05 July 2003, 08:07
Eddie
BCs for cast
Anyone know of a site that publishes BCs for cast bullets? My interest at the moment is the RCBS 7mm-145-SIL #82150.

TIA,

Eddie
08 July 2003, 03:51
andrew375
Try this precision bc calculator
10 July 2003, 11:48
Eddie
Thanks, Andrew.
23 July 2003, 13:37
waitaminit
Yes, thank you, Andrew.

Eddie, is the result of your calculations BC= .272 ?

This is the figure given in RCBS Cast Bullet Handbook.
24 July 2003, 12:36
Eddie
I came up with .268. Pretty close considering I have only a micrometer and calipers to measure with.

Eddie

Edited to change 298 to 268. I'm numerically dyslexic today.

[ 07-24-2003, 03:40: Message edited by: Eddie ]
30 July 2003, 16:40
Kev
HI,

I thank you for the site to get the BC of bullets I had a hard time and I am wondering if someone could help me out.THE WEIGHT OF THE BULLET IS 570, the medplate is .451 and the nose lenght , from the crimp groove to the top is .405. I hope someone will be able to give me a ball park figure of a BC.Over all lenght of the buyllet is 1.60 Thanks,Kev