6.5x47 with 140 AMAX?

[Dogtown]

I've got a new 6.5x47 and access to a lot of 140 AMAXs down here in NZ, but I'm at a loss for finding good data on this combo? After doing quite a bit of searching here, I get the impression the 140s are not that popular in this cartridge?

I'm running a 26" barrel and my intention is to hit steel at 1000m.

 

[jfseaman]

Re: 6.5x47 with 140 AMAX?

What is your twist rate?

What brands of powder can you get?

H4350 will get you to 2650 and that will give you:

Trajectory
Input Data
Manufacturer: Hornady Description: Amax (Litz)
Caliber: 0.264 in Weight: 140.0 gr
Ballistic Coefficient: 0.299 G7 (ICAO)
Muzzle Velocity: 2650.0 ft/s Distance to Chronograph: 0.0 ft
Sight Height: 1.60 in Sight Offset: 0.00 in
Zero Height: 0.00 in Zero Offset: 0.00 in
Windage: 0.000 MOA Elevation: 0.000 MOA
Line Of Sight Angle: 0.0 deg Cant Angle: 0.0 deg
Wind Speed: 10.0 mph Wind Angle: 90.0 deg
Target Speed: 10.0 mph Target Angle: 90.0 deg
Target Height: 12.0 in
Temperature: 59.0 °F Pressure: 29.92 in Hg
Humidity: 0 % Altitude: 0.0 ft
Vital Zone Radius: 5.0 in
Std. Atmosphere at Altitude: No Pressure is Corrected: Yes
Zero at Max. Point Blank Range: No Target Relative Drops: Yes
Mark Sound Barrier Crossing: Yes Include Extra Rows: No
Column 1 Units: 1.00 in Column 2 Units: 1.00 MOA
Round Output to Whole Numbers: No
Output Data
Elevation: 3.985 MOA Windage: 0.000 MOA
Atmospheric Density: 0.07647 lb/ft³ Speed of Sound: 1116.4 ft/s
Maximum PBR: 330 yd Maximum PBR Zero: 280 yd
Range of Maximum Height: 154 yd Energy at Maximum PBR: 1464.3 ft•lbs
Sectional Density: 0.287 lb/in²
Calculated Table
Range Drop Drop Windage Windage Velocity Mach Energy Time Lead Lead
(yd) (in) (MOA) (in) (MOA) (ft/s) (none) (ft•lbs) (s) (in) (MOA)
0 -1.6 *** 0.0 *** 2650.0 2.374 2182.7 0.000 0.0 ***
50 -0.1 -0.3 0.1 0.3 2573.9 2.305 2059.1 0.057 10.1 19.3
100 -0.0 -0.0 0.6 0.6 2499.0 2.238 1941.0 0.117 20.5 19.6
150 -1.2 -0.8 1.4 0.9 2425.3 2.172 1828.2 0.178 31.2 19.9
200 -4.0 -1.9 2.4 1.2 2352.9 2.107 1720.7 0.240 42.3 20.2
250 -8.3 -3.2 3.9 1.5 2281.7 2.044 1618.1 0.305 53.7 20.5
300 -14.2 -4.5 5.7 1.8 2211.8 1.981 1520.6 0.372 65.4 20.8
350 -22.0 -6.0 7.8 2.1 2143.3 1.920 1427.7 0.441 77.6 21.2
400 -31.6 -7.5 10.4 2.5 2076.0 1.859 1339.5 0.512 90.1 21.5
450 -43.3 -9.2 13.3 2.8 2009.9 1.800 1255.6 0.585 103.0 21.9
500 -57.1 -10.9 16.7 3.2 1944.9 1.742 1175.7 0.661 116.4 22.2
550 -73.1 -12.7 20.6 3.6 1881.0 1.685 1099.7 0.740 130.2 22.6
600 -91.7 -14.6 24.9 4.0 1818.0 1.628 1027.3 0.821 144.4 23.0
650 -112.9 -16.6 29.7 4.4 1756.1 1.573 958.5 0.905 159.2 23.4
700 -136.9 -18.7 35.0 4.8 1695.1 1.518 893.0 0.992 174.5 23.8
750 -163.9 -20.9 40.9 5.2 1635.0 1.464 830.8 1.082 190.4 24.2
800 -194.2 -23.2 47.4 5.7 1575.8 1.411 771.8 1.175 206.8 24.7
850 -228.0 -25.6 54.5 6.1 1517.6 1.359 715.8 1.272 223.9 25.2
900 -265.5 -28.2 62.3 6.6 1460.3 1.308 662.8 1.373 241.6 25.6
950 -307.2 -30.9 70.8 7.1 1404.0 1.258 612.7 1.478 260.1 26.1
1000 -353.2 -33.7 80.0 7.6 1348.9 1.208 565.5 1.587 279.3 26.7

 

[Neo]

Re: 6.5x47 with 140 AMAX?

I'm getting 2725 fps with 39.5 grs of H4350 out of 22" Rock barrel. It's not as accurate as the berger 140 VLD's but I haven't done alot of load development with them. RL 17 will give me 2900+ but it is temp sensitive.

 

[Dogtown]

Re: 6.5x47 with 140 AMAX?

This is promising. It's a 1:8.5 twist and I have a bunch of AR2209 (H4350) handy. I'm hoping to push them closer to 2800fps.

 

[milo 2.0]

Re: 6.5x47 with 140 AMAX?

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Dogtown</div><div class="ubbcode-body"> I'm hoping to push them closer to 2800fps. </div></div>
I'm hoping to win the Powerball tomorrow night. Given case size, I think going 140 is a waste, yes heavier bullet, higher bc, but dimished velocity.
In my 2 6.5x47's, I shoot 130 Norma's, with a bc of .575 by Litz. I think it's higher, but my velocitis are 2820 & 2860, not pushing hard, but close. So thinking 2800 with a 140, mmmmm.
Velocity drops fast in this case with weight, I've seen 123's at 3100, not too many 130's at 3000. Like I said it drops off fast, and for 140, the amax's bc sucks.
I do uunderstand economics though.

 

[Dogtown]

Re: 6.5x47 with 140 AMAX?

Ah well, this combination was a matter of convenience more than anything.

 

[uracowman]

Re: 6.5x47 with 140 AMAX?

I'd stick to a 123 scenar, 123 amax or 130 berger

 

[popapi]

Re: 6.5x47 with 140 AMAX?

Dog go to the below link for 140grn pill data. I had great luck doing so for the VLD and Hybrids in my 47L with 8 twist Broughton!
http://forum.accurateshooter.com/index.php?board=7.0

 

[Pusher591]

Re: 6.5x47 with 140 AMAX?

New 136 Scenar! Send it