Wind drift comparison ?

A

Ax238

Guest
I don't have any ballistic software to do this comparison, but I'm wanting a comparison between a 22 cal 60 gr Hornady Vmax at 3050 fps mv and a 6mm Sierra 85gr HPBT at 3150 fps mv. I was wondering about wind drift and bullet drop between the two loads. Thanks in advance. :)
 
Unfortunately most ballistics programs only use one BC, and Sierra lists two or three for most of their bullets. Hornady's program uses only one BC.
 
Ax238 said:
I don't have any ballistic software to do this comparison, but I'm wanting a comparison between a 22 cal 60 gr Hornady Vmax at 3050 fps mv and a 6mm Sierra 85gr HPBT at 3150 fps mv. I was wondering about wind drift and bullet drop between the two loads. Thanks in advance. :)
Click to expand...


Find the BC's of the two bullets and I can plug them in for you. Could probably even post a printout, with my kids' help! :D

al
 
Ax238 said:
I don't have any ballistic software to do this comparison, but I'm wanting a comparison between a 22 cal 60 gr Hornady Vmax at 3050 fps mv and a 6mm Sierra 85gr HPBT at 3150 fps mv. I was wondering about wind drift and bullet drop between the two loads. Thanks in advance. :)
Click to expand...

BC's are from the NECO "Quickload" Program
G1 BC of 22 cal 60 gn Hornady VMAX = .267
G1 BC of 6mm 85 gn Sierra HPBT = .277

With no further caluclaton you can see that the 85 grain Sierra with it's higher velocity and higher BC will have less wind deflection and less drop at all distances. It will also have lower time of flight to any target and have more energy and momentum at any distance.

You can use this on-ine calculator if you want to see numbers.
http://www.eskimo.com/~jbm/calculations/traj/traj.html
 
Ax238 said:
I don't have any ballistic software to do this comparison, but I'm wanting a comparison between a 22 cal 60 gr Hornady Vmax at 3050 fps mv and a 6mm Sierra 85gr HPBT at 3150 fps mv. I was wondering about wind drift and bullet drop between the two loads. Thanks in advance. :)
Click to expand...


VMax @ 3050 zero'd @200yds drops 94" @600 drifts 56"

Sierra @ 3150 zero'd @200 drops 80 and drifts 47"

I found the BC of the 6MM to be .311

Using .277 BC yields drop of 81" and drift of 49" for the 6MM.

al
 
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