shooting issues
hi guys where i live there are two big fields on each side of my house. however there is a state road between my house and the one field. my dad wants the hogs in that field shot but when you cross the road they bolt. so since there is about a 1 mile straight strech we wait for no cars in sight and shoot. but we can never hit them. they are about 275 and some are 375 yards out i'm using a 308 that is deadly and have killed hogs at 600 and 650 yards easy. so what we think is happening is the heat coming off the road is making the bullet rise when it hits the hotter air?? what do you guys think