try dope for 16.5" barrel running 168 grain federal gold medal match

[trinydex]

does anyone have mil based dope for a 16.5" or 16" barrel shooting 168 grain federal gold medal match out to maybe 600+?

[Digital_Damage]

Way to many variables (twist, height over bore, elevation) to use someone else's dope at +600, my two 16" guns very by almost .05 mil. Always need to true when going that distance.

[USMC_Anglico]

Any good ballistic calculator app will get you that info on your phone in seconds. As mentioned there is a lot more to it than bullet and barrel length. The good apps also have the ability for you to true up the range card to actual observation.

[trinydex]

Any good ballistic calculator app will get you that info on your phone in seconds. As mentioned there is a lot more to it than bullet and barrel length. The good apps also have the ability for you to true up the range card to actual observation.

just need something to try, ball park it to expedite process.

[mark5pt56]

You should be between 2475-2500 fps. Go JBM ballistics and use the calculator they offer. Not pasting correctly as you would see it, I'm sure you can follow it though, if not, do a search, takes 2 minutes.

At 0 DA, you are at 5.6 mils with 2475 low, 2500 high

http://www.jbmballistics.com/cgi-bin/jbmcard-5.1.cgi

mils

Trajectory Card
Manufacturer: Sierra Description: HPBT MatchKing™ Caliber/Weight: 0.308 in/168.0 gr
Zero Range: 100 yd Zero Temperature: 59.0 °F Zero Altitude: 0.0 ft
Zero Height: 0.00 in Zero Offset: 0.00 in Zero Wind Speed: 0.0 mph
Zero Wind Angle: 90 deg
Sight Height: 1.50 in Sight Offset: 0.00 in Line Of Sight Angle: 0.0 deg
Cant Angle: 0.0 deg Wind Speed: 10.0 mph Wind Angle: 90 deg
Show Drop and Windage Deltas: No Windage Correction for Zero Range: Yes
Drop Units: 1.000 mil Windage Units: 1.000 mil
Target Relative Drops: Yes Round Output to Whole Numbers: No
Trajectory Data
0 ft
Range (yd) 70 °F Range (yd)
100 0.0 100
0.2
200 -0.7 200
0.5
250 -1.1 250
0.7
300 -1.6 300
0.8
350 -2.2 350
1.0
400 -2.8 400
1.1
450 -3.4 450
1.3
500 -4.1 500
1.5
550 -4.8 550
1.7
600 -5.6 600
1.9
650 -6.4 650
2.1
700 -7.3 700
2.3
750 -8.3 750
2.6
800 -9.4 800
2.8
850 -10.5 850
3.0
900 -11.7 900
3.3
950 -13.0 950
3.5
1000 -14.4 1000
3.7
21/05/15 16:35, JBM/jbmcard-5.1.cgi


Trajectory Card
Manufacturer: Sierra Description: HPBT MatchKing™ Caliber/Weight: 0.308 in/168.0 gr
Zero Range: 100 yd Zero Temperature: 59.0 °F Zero Altitude: 0.0 ft
Zero Height: 0.00 in Zero Offset: 0.00 in Zero Wind Speed: 0.0 mph
Zero Wind Angle: 90 deg
Sight Height: 1.50 in Sight Offset: 0.00 in Line Of Sight Angle: 0.0 deg
Cant Angle: 0.0 deg Wind Speed: 10.0 mph Wind Angle: 90 deg
Show Drop and Windage Deltas: No Windage Correction for Zero Range: Yes
Drop Units: 1.000 MOA Windage Units: 1.000 MOA
Target Relative Drops: Yes Round Output to Whole Numbers: No
Trajectory Data
0 ft
Range (yd) 70 °F Range (yd)
100 0.0 100
0.8
200 -2.4 200
1.8
250 -3.9 250
2.2
300 -5.7 300
2.8
350 -7.5 350
3.3
400 -9.5 400
3.9
450 -11.7 450
4.5
500 -14.0 500
5.1
550 -16.5 550
5.8
600 -19.2 600
6.5
650 -22.1 650
7.2
700 -25.2 700
8.0
750 -28.6 750
8.8
800 -32.2 800
9.6
850 -36.1 850
10.4
900 -40.3 900
11.2
950 -44.8 950
12.0
1000 -49.5 1000
12.8
21/05/15 16:37, JBM/jbmcard-5.1.cgi

[trinydex]

is the sight height for predatobr with a normal height larue mount 2.6?

[Failure2Stop]

You can measure it pretty easily and take the guess work out of it.
I use 2.8 inches.

FYI, 168FGMM comes in right around 2500 from my 16" barrels.

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Jack Leuba
Knight's Armament Company: Military/Govt Product Liaison
F2S Consulting: Director of Shooting Stuff