Ammo POI

[Shihan]

What would you guys say the point of impact at 100yds would be for 77gr and 55gr projectiles if your 1/7 16" is dialed in with 62gr?

Thanks

[system]

How close are the respective velocities? Most important factor for vertical string at only 100yds, before BC becomes a significant factor at distance.

And, different projectiles “take” to rifling in varying degrees. You will have some lateral offset too.

[Shihan]

My carbines are zeroed for M855 at 50yards but its too expensive to shoot anymore and for some reason training ammo isnt in my Army retirment package. So I need to shoot 55gr stuff. Velocities and all that stuff is above my head. Im the only Jap I know who cant figure out math problems.

[DRich]

No way to give you an accurate answer without knowing the velocities of the bullets in question. The ballistic coefficients would be helpful, too.

However, at 100yds, I doubt you’d have more than a 3" spread between most factory loadings from 40gr - 77gr.

[Shihan]

@DRich

No way to give you an accurate answer without knowing the velocities of the bullets in question. The ballistic coefficients would be helpful, too.

However, at 100yds, I doubt you’d have more than a 3" spread between most factory loadings from 40gr - 77gr.

Heck I dont even know what a balistic coefficient flux capacitor.

[Shihan]

@DRich

No way to give you an accurate answer without knowing the velocities of the bullets in question. The ballistic coefficients would be helpful, too.

However, at 100yds, I doubt you’d have more than a 3" spread between most factory loadings from 40gr - 77gr.

Heck I dont even know what a balistic coefficient flux capacitor is.