mountain_cowboy
Member
Forgive me for these elementary ballistics questions. I'm used to shooting single action revolvers at 25 yards. Okay, I'm slowly trying to learn about the ballistics of my favorite calibers. So far, I've just sighted my rifles in at 100 yards with factory ammo and gone from there, with no ballistics data. Now, I'm trying to read up on bullet drop, trajectory, and different loads. However, I don't get the bullet drop differences for zeroing at different yardages. For example, looking at the charts here for Fed GMM:
http://www.snipercentral.com/308.htm
When zeroing a .308 rifle at 600 yards, the trajectory of the bullet peaks around 300 yards, right? Meaning that when the bullet is fired, its path rises until it reaches 300yards, where it's roughly 35" above where it was originally aimed. Then the bullet starts to drop, and at 600 yards, it is in line with where it was aimed. It then continues to drop increasingly rapidly at it moves out. Okay, that makes sense to me.
Now, if you look at the lower chart for a 100 yard zero, out at 200 and 300 yards the bullet has already dropped considerably. Why wouldn't the bullet's flight arc still be on the rise?
Does anyone have a link to a diagram with maybe some arcs drawn on it showing bullet path for zeroing at different yardages? Thanks.
http://www.snipercentral.com/308.htm
When zeroing a .308 rifle at 600 yards, the trajectory of the bullet peaks around 300 yards, right? Meaning that when the bullet is fired, its path rises until it reaches 300yards, where it's roughly 35" above where it was originally aimed. Then the bullet starts to drop, and at 600 yards, it is in line with where it was aimed. It then continues to drop increasingly rapidly at it moves out. Okay, that makes sense to me.
Now, if you look at the lower chart for a 100 yard zero, out at 200 and 300 yards the bullet has already dropped considerably. Why wouldn't the bullet's flight arc still be on the rise?
Does anyone have a link to a diagram with maybe some arcs drawn on it showing bullet path for zeroing at different yardages? Thanks.