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#3809214 - 12/02/12 08:23 PM .308 flight path
tjhook Offline
Bird Dog

Registered: 07/08/12
Posts: 476
Loc: Ft Worth
Does this sound about right for a flight path for a 308win
2" high at 100
0 at 200
6" low at 300

165g


Edited by tjhook (12/02/12 08:34 PM)

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#3809264 - 12/02/12 08:36 PM Re: .308 flight path [Re: tjhook]
rustytxrx Offline
Tracker

Registered: 11/09/12
Posts: 647
I was testing a fixed 12x scope this afternoon before hunting. Out of my rifle with 150 gr remington. Trajectory was approximately +2 @ 150, 0 @ 200, -4 @ 250, -10 @ 300

I was shooting 20" barrel so might have lost some velocity. Did not chrono rounds.

Your numbers seem reasonable to me.

Rusty



Edited by rustytxrx (12/02/12 08:37 PM)

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#3809331 - 12/02/12 08:51 PM Re: .308 flight path [Re: rustytxrx]
tjhook Offline
Bird Dog

Registered: 07/08/12
Posts: 476
Loc: Ft Worth
Thanks rusty..... im gonna try to find a range near me and dial it in one day this week

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#3809677 - 12/02/12 10:10 PM Re: .308 flight path [Re: tjhook]
FiremanJG Online   content
THF Trophy Hunter

Registered: 12/16/08
Posts: 7114
Loc: Melissa, Collin County
Originally Posted By: tjhook
Does this sound about right for a flight path for a 308win
2" high at 100
0 at 200
6" low at 300

165g


Go to jbmballistics.com

.308 cal, 165 gr. G1 BC .404, muzzle velocity 2700 fps, 200 yard zero

See what you come up with.
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#3809728 - 12/02/12 10:24 PM Re: .308 flight path [Re: FiremanJG]
tjhook Offline
Bird Dog

Registered: 07/08/12
Posts: 476
Loc: Ft Worth
i came up with 1.5 at 100 high and 7 low at 300....maybe i should be changing my ammo

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#3809852 - 12/02/12 11:18 PM Re: .308 flight path [Re: tjhook]
kmon1 Online   content
junior
THF Celebrity

Registered: 09/27/06
Posts: 14865
Loc: Rowlett, Texas
That is actually good for a 308 and from my shooting the ones I have had very few factory loads are actually that flat, usually see one to 3 inches more drop than that at 300.

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#3810103 - 12/03/12 07:03 AM Re: .308 flight path [Re: kmon1]
cmc Online   content
Veteran Tracker

Registered: 12/08/05
Posts: 3214
Loc: Graham to Arlington
Seems pretty flat to me. I hand load 168 grains at max and its not as flat as that.
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#3810243 - 12/03/12 08:04 AM Re: .308 flight path [Re: tjhook]
FiremanJG Online   content
THF Trophy Hunter

Registered: 12/16/08
Posts: 7114
Loc: Melissa, Collin County
Originally Posted By: tjhook
i came up with 1.5 at 100 high and 7 low at 300....maybe i should be changing my ammo


Why, what's wrong with it?

Throw "flat" out the window, especially with a .308 Win. No projectile flies "flat", yes some drop less than others, but that's it. Consistancy is THE most important thing, and the .308 is consistant all the way to 500 yards. I've sent thousands of them that far, and farther, and have obseved the .308 have the same trajectory no matter the environmental conditions.

Put my scope on your rifle, I'll dial to 3.0 Mils (54") and wear out 500 yards, no problem. If your rifle shoots that ammo consistantly, stick with it.
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#3810355 - 12/03/12 08:39 AM Re: .308 flight path [Re: FiremanJG]
tjhook Offline
Bird Dog

Registered: 07/08/12
Posts: 476
Loc: Ft Worth
Nothing's is wrong with that... i know a. 308 cant hit 4 in apart from 100 to 300 but i like the 2 high and 6 in low better.... in the big picture my wife will he shooting it so 300 and in center mass will be a kill shot.... at 100 aim center mass and 300 yard aim high vitals wile everything in between will be ctr vitals..... i got my weapons shot in just never messed with a 308 before... all i have and had in mags and my 270 wby mag is a whole different ball game... the smallest round i shoot is a 5.56 NATO and j can dial that it with a M4 easy....

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#3810488 - 12/03/12 09:21 AM Re: .308 flight path [Re: tjhook]
rustytxrx Offline
Tracker

Registered: 11/09/12
Posts: 647
I had the chance to shoot at 1000 yd range one time. I had to have just under 400 inches to change from 100 yd zero to 1000 yd zero.

When ya drive to target ya wonder how ya could miss something that big

Ruzty

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#3810520 - 12/03/12 09:33 AM Re: .308 flight path [Re: tjhook]
FiremanJG Online   content
THF Trophy Hunter

Registered: 12/16/08
Posts: 7114
Loc: Melissa, Collin County
Nothing wrong with a 200 yard zero on a hunting rifle.

I'm assuming you have a duplex reticle, yes? If it is fine in the center and has heavy posts you can make it into a hold over reticle. You can set up a yard stick at 100 yards, look at it through the scope and see where the heavy posts sight on the yard stick. Say you've got the cross on the 18" line, the lower post is 3" below ad the upper post is 3" above (making up those numbers). That can give you a way to hold over and under from your 200 yard zero. So you will actually have 3 points of aim in the duplex reticle.

Remember, with a second focal plane scope, those measurements will only subtend at that power setting on the magnification. When you change magnification the measurements change.
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#3810568 - 12/03/12 09:50 AM Re: .308 flight path [Re: FiremanJG]
tjhook Offline
Bird Dog

Registered: 07/08/12
Posts: 476
Loc: Ft Worth
Yes I will be picking up one i can do that with.... and get dialed it.... im gonna shoot 168 amx rounds.... my wife should be pleased when this is all over with.... she shot her first deer last year with my 300 mag at 450 yrds and after 4 stitches in her eyebrow refused to ever shoot if again.....thanks for the help gents

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#3810701 - 12/03/12 10:26 AM Re: .308 flight path [Re: tjhook]
Don Dial Offline
Veteran Tracker

Registered: 11/06/11
Posts: 3085
Federal has a drop chart on the 175 SMK at 2600 fps..shows .5 in
high at 100,dead on at 200 and about 3 in low at 300 and 15in plus at 400 at 2600 fps. My 26in bbl TRG dead on at 100 and holding at the 300yd mil dot on my Leupold Mark IV put me about 8
in low at 300 yds..so I'd think that their data isn't for our area..DD

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#3810766 - 12/03/12 10:44 AM Re: .308 flight path [Re: Don Dial]
Stangfish Offline
Tracker

Registered: 02/17/11
Posts: 978
Loc: West of the Golden Triangle
Originally Posted By: Don Dial
..so I'd think that their data isn't for our area..DD


I agree. If I remember correctly, I get 8.25 inches drop with it .5 high at 150 yards using a warm load with a 168 24 inch barrel.

Working from 100 with a light load(41 grains 4895), 28" barrel with a 178 gets 3.25 MOA dialed for 300 bull. Thats roughly 9 7/8 drop.
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#3821549 - 12/06/12 11:09 AM Re: .308 flight path [Re: Stangfish]
tjhook Offline
Bird Dog

Registered: 07/08/12
Posts: 476
Loc: Ft Worth
So i finally shot my 308 in and only could do it at 100 yards...but i sighted it in 2" high at 100 and went throw 4 different types of shells... i am using the vision 165g and keyholed 5 shells in a row.... all.shots were on a 1inch black bullet marker..... with a savage 11 308....cant believe how well it shot...my wife is pleased in her new rifle

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