5pointCal
How will this affect deer movement?
To me I beleive they will continue to move but the movement will occur more on the Lee side of the ridge - with less movement on the ridge or the winward side... Of course you will have to be much more aware of the wind...
How will this affect ML performance?
Probably one of the bigest factors in the projectile drifting from POA is wind currents... Big slow ML projectiles will drift with the wind... The biggest factor there is the range... How it drifts depends on how far it is traveling....