06-12-2017, 05:48 PM
BDCs are not as useful for me since I travel to so many different elevations, and see major temp shifts even within a week.
For me, 500yds is almost pointless to shoot at unless there are tiny targets that are challenging to hit in the wind. Even my 12" poppers at 700yds are boring to repeatedly connect on, and I find myself wanting more range.
It is challenging to hit sils at 1100yds or more with my 16" and 18" Grendels in shifting winds with 123gr AMAX. In steady or no wind, not so much.
I use Vortex Viper PSTs. The new Gen II PST is what I recommend, with the HD glass. If you live in an area where temps are more mild, and are close to or at sea level, a BDC might make sense, but you need to know your temp change up or down clicks from the yardage indicators on the BDC, like we had to do with the M3A back in the day.
If you do your homework with a ballistics program and see how much temp affects your trajectory, you can start to see a pattern in practical values in how much environmentals will change your POI. You'll start to see that at 300yds, not much changes. As you go farther out, the increments in POI will become more pronounced.
For me, 500yds is almost pointless to shoot at unless there are tiny targets that are challenging to hit in the wind. Even my 12" poppers at 700yds are boring to repeatedly connect on, and I find myself wanting more range.
It is challenging to hit sils at 1100yds or more with my 16" and 18" Grendels in shifting winds with 123gr AMAX. In steady or no wind, not so much.
I use Vortex Viper PSTs. The new Gen II PST is what I recommend, with the HD glass. If you live in an area where temps are more mild, and are close to or at sea level, a BDC might make sense, but you need to know your temp change up or down clicks from the yardage indicators on the BDC, like we had to do with the M3A back in the day.
If you do your homework with a ballistics program and see how much temp affects your trajectory, you can start to see a pattern in practical values in how much environmentals will change your POI. You'll start to see that at 300yds, not much changes. As you go farther out, the increments in POI will become more pronounced.
NRA Basic, Pistol, Rifle, Shotgun, RSO
CCW, CQM, DM, Long Range Rifle Instructor
6.5 Grendel Reloading Handbooks & chamber brushes can be found here:
www.AR15buildbox.com
CCW, CQM, DM, Long Range Rifle Instructor
6.5 Grendel Reloading Handbooks & chamber brushes can be found here:
www.AR15buildbox.com