scope question please help

[brentc]

Originally Posted by GI44

so if i were to shoot a 300 WM and zero it at 100 yards it would not cross the line of sight again at further distances?

No, it will not because your 100 yard zero is the second time the bullet crossed the line of sight. The first time it crossed was probably around 75 yards.

[brentc]

Originally Posted by bruce_ventura

Depends on the bullet and caliber. For example, if I zero my 270 Win at 100 yds, the bullet trajectory touches line of of sight just once. If I zero at 200 yds, the bullet crosses line of sight twice, once at about 40 yds and then again at 200 yds.

It will always touch it twice not matter what your zero is, as long as your scope is mounted above your bore. At your 100 yard zero it would have hit around 75 yards the first time it crossed.

[dstewart51]

Originally Posted by brentc

No, it will not because your 100 yard zero is the second time the bullet crossed the line of sight. The first time it crossed was probably around 75 yards.

Just ran a 155gr BTHP at 3300fps in Shooter, yep, about 75 and 100.

For the fun of it I tried a few light and fast and some heavy's at various and even impossible velocity. Never got anything close to 100 and 300 zeros. Maybe if your scope was a foot or more above your barrel?