Thread: Wind in the Mountains

Originally Posted by kimjon

For my on interest I had a play on a Ballistic programme, I entered in some numbers purely to generate some info to compare my thoughts on bullet weight playing no role in beating the wind.

I used these figures for below:

Using a 300grain 0.338 bullet with a BC of 0.66 and a velocity of 2820fps

1000-215.8-20.621.52.12268.92.084571.41.18600



And this time using a 160grain .284 bullet with a BC of 0.66 and a velocity of 2820fps

1000-215.8-20.621.52.12268.92.081828.61.18600


Both exactly the same, bar the energy figures. Velocity, drop, drift etc are all the same, so from my reckoning bullet weight has nothing to add as far as beating the wind goes, its simply comes down to BC & velocity (time in flight).


kj

My shooter program must be fucked. I got an moa difference over 700 yrds between a 130 and 160 gr .264 All I Changed was weight.
The heavier pill will maintain velocity better than a lighter pill. Therefore there must be a difference somewhere no???


Sent from my iPhone using Tapatalk. So please forgive my sausage fingers!!!

Your doing something wrong R93. The only difference is downrange energy. If they've got the same BC they'll follow the same trajectory. Ballistic FTE just confirmed it for me.