In order to participate in the GunBroker Member forums, you must be logged in with your GunBroker.com account. Click the sign-in button at the top right of the forums page to get connected.
what zero at 100yds under these scenarios
dantheman
Member Posts: 259 ✭✭✭
This deer season i will be hunting in woods and open fields. My shots will potentially range from 10yds to 300 yds. where should i sight in my .308 at 100yds to cover both these scenarios. I will be shooting either 150gr or 165 gr ammo. Thanks
Comments
Personally, I'd just sight it at 100 and then add elevation for longer shots. If you regularly shoot longer shots, then I'd zero for your normal ranges.
If I'm not mistaken if you zero a .308 at 100 yards then the bullet is actually still rising but should start back down shortly. If you zero at point blank range the bullet will likely keep rising for 300+ yards because of the angle of the scope.
If we're talking open sights, that's a little different since they are much lower to the bore, but I'd say set them between 25 and 50 yards.
If you are using 150 grain bullets they will have a ballistic coefficient of approx .38 to .42. using an average of .40, a 150 gr bullet zeroed at 100 yds will drop 3.8" at 200 yds and 13.9" at 300 yds.
I would zero it at 200 yds. Then it would be 1.9" high at 100 yds and only drop 8.2' at the 300 yd mark.
Federal Prem. 150gr Nosler BT +2.7 high at 100yd = +3"@ 133yd, -3"@277yd*
Rem. 150 PSP +2.73@100 = +3"@ 130yd, -3"@ 267yd*
*Factory spec.s, your results will vary, usually to the shorter side.
Now, if you had practiced at ranges over 100yd (you have practiced at 100 haven't you?) you would already know these numbers for your rifle. As you don't know, I'm assuming you haven't practiced and should NOT be shooting at any game that is further away than you have practiced. *This from a guy that does practice to 500yd and shoots game out to 400yd*
Some guys like a mag full of lead, I still prefer one round to the head.
you can enter in all the imputs then will calculate bullet drop for you
you need to know fps,bc,bullet weight ect
by the way i zero my rifle at one hundred yds then go from there
http://www.eskimo.com/~jbm/ballistics/ballistics.html
hope that helps you
doc
I apologize if I sounded like (or was) belittling your answer, it was my misunderstanding... [V]
This method is referred to as "Maximum Point Blank Range" and is recommended by some notable shooters, not the least of whom is the late Warren Page. I don't recall if Page called it that exactly, but he recommended the method. If the critter is past 300 yds, and you're confident of your ability to make the shot, hold the horizontal crosshair even with the top of his back in the chest cavity area and you'll be taking home some venison.
Good hunting,
OleDuk
shoey
Yardages are baised on factory specs, you rifle is different, so results will vary.
This methiod isn't a "hit exactly where you hold" system, but a "hold in the middle and take the shot" system.
Some guys like a mag full of lead, I still prefer one round to the head.
It would be good to practice at 300 yards, no doubt, but maybe his range only goes to 100.
I have never had a chance to go to a range that went past 100, but the one long shot I got, at 194 yards I got the deer right through the heart.
I had practiced a lot at 100 and I knew my ballistics
My first suggestion would of course be to buy a set of target knobs like stoney points or even a factory set,..and dial in your "come-ups"
why chase the game when the bullet can get em from here?....
Got Balistics?