-
Having trouble using the site?
Contact support
Re: bc of 190 smk?? im getting different answers from
The 190gr SMK has multiple BC's depending on the speed that it is traveling.
If you look at Serria's site, it breaks out the BC vs velocity.
I believe you need to use the G7 drag model to calculate trajectory.
The 190gr SMK has multiple BC's depending on the speed that it is traveling.
If you look at Serria's site, it breaks out the BC vs velocity.
I believe you need to use the G7 drag model to calculate trajectory.
Re: bc of 190 smk?? im getting different answers from
.308 dia. 190 gr. HPBT MatchKing
.533 @ 2100 fps and above
.525 between 2100 and 1600 fps
.515 @ 1600 fps and below
.308 dia. 190 gr. HPBT MatchKing
.533 @ 2100 fps and above
.525 between 2100 and 1600 fps
.515 @ 1600 fps and below
Re: bc of 190 smk?? im getting different answers from
I have used the .533 BC, and it has shot spot on to 1K.
I have used the .533 BC, and it has shot spot on to 1K.
Re: bc of 190 smk?? im getting different answers from
I've measured an average BC of 0.527 for this bullet (about 0.5% higher than Sirras average value).
GB is right though, the G1 BC is highly affected by velocity and the G7 BC would be better to use to predict long range trajectories for this bullet.
I measured the G7 BC of this bullet to be 0.270, and it only varies by 0.006 from 3000 fps to 1500 fps (the G1 BC varies by .071).
Make sure your program can accept G7 BC's and that you have it set to use a G7. Otherwise, you will get a non-physical trajectory and your computer will melt.
Take care,
-Bryan
I've measured an average BC of 0.527 for this bullet (about 0.5% higher than Sirras average value).
GB is right though, the G1 BC is highly affected by velocity and the G7 BC would be better to use to predict long range trajectories for this bullet.
I measured the G7 BC of this bullet to be 0.270, and it only varies by 0.006 from 3000 fps to 1500 fps (the G1 BC varies by .071).
Make sure your program can accept G7 BC's and that you have it set to use a G7. Otherwise, you will get a non-physical trajectory and your computer will melt.
Take care,
-Bryan
Re: bc of 190 smk?? im getting different answers from
Zombie thread revival, but hey this is useful intel. Thanks for all your work and sharing it with us Bryan, even two years later I stumble across it and it's still just as useful.
Zombie thread revival, but hey this is useful intel. Thanks for all your work and sharing it with us Bryan, even two years later I stumble across it and it's still just as useful.
Similar threads
