10-24-2020, 05:44 PM
Spin drift is something that you would account for in hopes of a first-round hit, when testing your ability to make first-round hits.
Like humidity, it has very little impact on windage deflection within a certain range.
With the calculators that account for it, you can run the program with your load and see exactly what that difference is.
You might see .1 mils of deviation in favor of RH twist at 700yds, and .2 mils at 900yds.
I personally prefer to hold for wind, not dial it in.
The amount of shifting I constantly make in the wind is too fast to dial anyway, and spin drift is imperceptible to the shooter in that type of LR shooting.
Like humidity, it has very little impact on windage deflection within a certain range.
With the calculators that account for it, you can run the program with your load and see exactly what that difference is.
You might see .1 mils of deviation in favor of RH twist at 700yds, and .2 mils at 900yds.
I personally prefer to hold for wind, not dial it in.
The amount of shifting I constantly make in the wind is too fast to dial anyway, and spin drift is imperceptible to the shooter in that type of LR shooting.
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