Does a moly bullet coating affect BC ?

[David Milisock]

Has anyone considered that they pit too much weight to the results of these programs?

 

[Keith Glasscock]

You could check for BC change with a chronograph and E-target. Shoot 10 of each, and see if the velocity loss over a longer shot (600 is what I use) is different on average. If not, it ain't BC... If there is a difference, you can even calculate how much the BC changed.

While neither the chronograph or E-target is accurate enough to calculate the absolute BC, they can allow comparisons.

 

[dcali]

Has anyone considered that they pit too much weight to the results of these programs?

They work very well if you feed them good information. If something is dramatically off, it's generally safe to say that it's not the calculator. It's more than likely that the user is being sloppy about inputting data. People act like there's still mystery in ballistics, and there really isn't. It was figured out many decades ago. They only mystery left is a bunch of nuance that was too minor for the aerospace industry to care about. If putting moly on a bullet significantly changes the trajectory, there WILL be an obvious reason. Since there isn't, I'm highly skeptical.

 

[Capt. Oblivious]

For what its worth, I shot 215 Hybrids (amongst others) naked, then with Moly, then HBN and im back to shooting naked again and my ballistic app settings never changed over the years of shooting them out to 1200y. Yes the loads differed a little and the speed might have changed a little but nothing that would make me sit up and think any of the coatings changed the bullets BC

 

[David Milisock]

They work very well if you feed them good information. If something is dramatically off, it's generally safe to say that it's not the calculator. It's more than likely that the user is being sloppy about inputting data. People act like there's still mystery in ballistics, and there really isn't. It was figured out many decades ago. They only mystery left is a bunch of nuance that was too minor for the aerospace industry to care about. If putting moly on a bullet significantly changes the trajectory, there WILL be an obvious reason. Since there isn't, I'm highly skeptical.

I've used moly coated bullets and bore coating for decades in varmint shooting for the obvious reasons but mainly increased shot strings before mandatory cleaning.

Hyper velocities (3,500+ FPS) in my opinion require it. I do the work, zero the rifles , in the field I don't uses benches, I drop, stabilize, aquire and fire. One shot, one kill is the goal.