Similar BCs but different weight and/or caliber

Dave King

Well-Known Member
Joined
May 3, 2001
Messages
2,366
It's my understanding that if you launch two bullets at the same velocity and those two bullets share a common BC they will have very similar drop and wind drift characteristics regardless of the bullet weight and caliber differences.

More graphically, a 55 grain .223 bullet with a BC of .300 and a 250 grain .338 caliber bullet with a BC of .300 both launched at 3000 fps will have nearly identical drop and wind deflection characteristics.

Is this essentially true?
 

Warren Jensen

Well-Known Member
Joined
May 3, 2001
Messages
80
Location
Arco, ID 83213
Dave,

Yes, it is essentially true. Ballistically speaking they will have identical drop and drift. In practice they will present slightly different cross-sections to the wind, or a different sail, and the actual drift is likely to be slightly different.
 

Dave King

Well-Known Member
Joined
May 3, 2001
Messages
2,366
Warren

Thanks for the reply.

I didn't give much thought to the sail area concept in wind drift so thanks for the new additional info.
 

Trending threads

Recent Posts

Nightforce has great tracking capabilities, they are rugged, a bunch of elevation, holds zero forever, and reticles are designed for long range shooting. So if you are looking to shoot long distances constantly, then you need a scope that can take the abuse. -- gilmillan1


Culture Of Excellence At Nightforce Optics
By Len Backus

A high level of quality both in production and in service. Read More


Nightforce is such a solid combo of reticle, available elevation, glass that is good enough to shoot at the longest range you can dial. Nightforce has bullet proof construction that can handle the incidental horse rolling or some other rodeo action. -- bigngreen


Nightforce ATACR Scope Review
By Jeff Brozovich

The new NightForce ATACR is for sure a top choice for any long range shooter. Read More


The total package. Nightforce is the best I have used as far as turret feel and solid detents. I have never had one that didn't track right on and always return to zero. Nightforce NXS is the best value for everything I need. -- Broz


Nightforce Velocity 1000 Reticle Review
By Scott Shreve

I think Nightforce knocked it outta the park with this reticle! Read More

NightForce


Top