Do bullets drift to the right at long range do to the spin of the bullet acting on the air as it falls? Or something like that that isn't related to wind? The two rifles that I was shooting today were showing about 6MOA of drift to the right at 1000 yrds. Both rifles were shooting mid BC bullets (.4ish) and show about 24MOA drop between 100 and 1000. I couldn't detect any wind and haven't seen this before with higher BC flatter shooting rigs. Can anyone shed some light for me?