Poi

[Wolf]

308,win of you are dead on at 250yards how low at 300,and how high at 100, and 200.

[hafejd30]

That will depend on the bullet your shooting and its muzzle velocity. An online free ballistic calculator will get you about as close as you can guess when you enter the round your shooting. There's a difference when comparing rounds at 2500 fps vs 2750.

On average 100 is 3.5" high. 200 is 3" high. 300 is 4.75" low. That's crunching numbers with my 308 carbine at a 250 zero. Those are running about 2600 fps

[Damon555]

Yep....gotta know the velocity and type of bullet. The best way to find out is to shoot it at those distances and see for yourself.

[Wolf]

147grain perfecta, 308,

[Ranch Dog]

Here you go...


https://www.youtube.com/watch?feature=player_embedded&v=LeVTIklj94o

Alright, this guy is seeing an average of 2604 FPS from his "Standard M1A" which I believe would have a 22" barrel. The average velocity was recorded at 10' from the muzzle so that corrects back to the muzzle as 2662 FPS.

In my ballistics program, I changed my 10FCM barrel length to 22" and then modified a Speer bullet to 147-grains. Here is what it spit out.

http://ranchdogoutdoors.com/temp/90/perfecta_308Win_147_ballistics.jpg

[Wolf]

Thanks my man

[Ranch Dog]

Your welcome!