Shoot2Hunt University

[Coleredding00]

@Formidilosus thanks for all the information you’ve shared on here and the podcasts.

This piggybacks off @TimberHunter’s question. I have heard other folks (outside of the TMK discussion) adjust their BC when trueing.
Could you please elaborate on why you shouldn’t “touch real BC numbers on bullets?”

Apologies if you’ve explained this somewhere else.

Thanks again.

I am curious on the reason for this as well. I have always had to true BCs on bullets to line up dope. Changing the velocity that i have actually measured and observed in the present environmental conditions and just believing the bullet mfg to be honest and correct seems strange... bullets like the 180 ELDM are notorious for dishonest BCs, and different bullets from different twists at different mach values will have different BCs.

 

[3gunyotehtr]

I have always adjusted bc as well. I'm not changing velocity if I know that it is correct, but bc does vary small amounts between rifles, and most of the time it doesn't take much change to make it line up with actual data. Even doppler testing on the same bullet by different facilities will often give different numbers.

 

[longrangelead]

Another convert...

Seeing and doing is believing.