· Gold Bullet Member and Noted Curmudgeon
When you are a mile high, the air is thinner and accordingly the air resistence is reduced. Velocity doesn't drop as fast and bullet drop at any particular range will be somewhat reduced. Ain't usually a lot, though. Enough to measure, not usually enough to make a lot of difference in practice on game. On targets - best to zero at the altitude you'll be shooting at.This is a good thread about trajectories. However, I was wondering how much of a factor does altitude play with it? That is, are long-range [bullet] trajectories different at sea level compared to that at 5,000 feet?
I've shot low-powered rounds at long distances [200 yards plus] and noticed that bullet drop seemed to be less at the 5,000 foot elevation shooting areas compared to doing the same at sea-level.