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Borrego Bob

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Reply with quote  #1 
 

Calculating Trajectories . . . . . . . . Done (2.9 seconds)

MSR Hunting Calibers Ballistic Trajectory Chart


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Borrego Bob

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Reply with quote  #2 
Notice the 270AR shooting a 130gr Nosler BT at 2800fps VS the 308WIN shooting a 168gr HPBT at 2700fps has a flatter trajectory with less drop.
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30 Remington AR

Drag Function: G1
Ballistic Coefficient: 0.435
Bullet Weight: 150 gr
Initial Velocity: 2650 fps
Sight Height : 1.5 in
Shooting Angle: 0°
Wind Speed: 10 mph
Wind Angle: 90°
Zero Range: 100 yd
Chart Range: 600 yd
Maximum Range: 5511 yd
Step Size: 10 yd
International Standard Atmosphere
Altitude: Sea Level (0 ft)
Barometric Pressure: 29.92 Hg
Temperature: 59° F
Relative Humidity: 50%
Speed of Sound: 1116 fps

RangeElevationElevationElevationWindageWindageWindageTimeEnergyVel[x+y]
(yd)(in)(MOA)(MIL)(in)(MOA)(MIL)(s)(ft.lbf)(ft/s)
0-1.500.000.000.030.000.000.0023392650
10-1.1110.403.030.040.390.110.0123032629
20-0.773.661.060.070.310.090.0222672609
30-0.491.540.450.110.330.100.0322322588
40-0.260.610.180.160.380.110.0521972568
50-0.080.140.040.230.440.130.0621632548
600.05-0.08-0.020.320.510.150.0721292528
700.12-0.17-0.050.430.580.170.0820952508
800.14-0.16-0.050.550.650.190.0920622488
900.10-0.10-0.030.690.730.210.1120292468
1000.000.000.000.840.800.230.1219972448
110-0.150.130.041.010.880.260.1319652429
120-0.370.290.081.210.960.280.1419342409
130-0.640.470.141.411.040.300.1619022390
140-0.980.660.191.641.120.330.1718722370
150-1.370.870.251.881.200.350.1818412351
160-1.831.090.322.151.280.370.1918112332
170-2.351.320.382.431.360.400.2117822313
180-2.941.560.452.731.450.420.2217532294
190-3.601.810.533.051.530.450.2317242275
200-4.322.060.603.391.620.470.2516952256
210-5.112.320.683.751.700.500.2616672237
220-5.972.590.754.121.790.520.2716402218
230-6.902.860.834.521.880.550.2916122200
240-7.903.140.914.941.960.570.3015852181
250-8.973.431.005.382.050.600.3115582163
260-10.123.721.085.842.140.620.3315322145
270-11.354.011.176.322.230.650.3415062126
280-12.654.311.256.822.320.680.3614812108
290-14.034.621.347.342.420.700.3714552090
300-15.494.931.437.892.510.730.3814302072
310-17.035.241.538.452.600.760.4014062054
320-18.655.561.629.042.700.780.4113812036
330-20.365.891.719.662.790.810.4313572019
340-22.156.221.8110.292.890.840.4413342001
350-24.036.551.9110.952.990.870.4613111984
360-26.006.892.0111.633.080.900.4712881966
370-28.057.242.1112.343.180.930.4912651949
380-30.207.592.2113.073.280.950.5012431932
390-32.457.942.3113.823.380.980.5212211914
400-34.788.302.4114.603.481.010.5411991897
410-37.228.662.5215.403.591.040.5511781880
420-39.759.032.6316.233.691.070.5711571864
430-42.389.412.7417.083.791.100.5811361847
440-45.119.792.8517.963.901.130.6011161830
450-47.9510.172.9618.874.001.160.6210961814
460-50.8910.563.0719.804.111.200.6310761797
470-53.9410.963.1920.764.221.230.6510561781
480-57.1111.363.3021.754.331.260.6710371765
490-60.3811.763.4222.764.441.290.6810181748
500-63.7612.173.5423.804.551.320.7010001732
510-67.2612.593.6624.874.661.350.729821717
520-70.8813.013.7925.974.771.390.749641701
530-74.6213.443.9127.104.881.420.759461685
540-78.4913.884.0428.265.001.450.779291670
550-82.4714.324.1629.445.111.490.799121654
560-86.5914.764.2930.665.231.520.818951639
570-90.8315.214.4331.905.341.550.838781624
580-95.2115.674.5633.175.461.590.858621609
590-99.7216.144.6934.485.581.620.868461594
600-104.3616.614.8335.825.701.660.888311579

Grendel

Drag Function: G1
Ballistic Coefficient: 0.510
Bullet Weight: 123 gr
Initial Velocity: 2580 fps
Sight Height : 1.5 in
Shooting Angle: 0°
Wind Speed: 10 mph
Wind Angle: 90°
Zero Range: 100 yd
Chart Range: 600 yd
Maximum Range: 6147 yd
Step Size: 10 yd
International Standard Atmosphere
Altitude: Sea Level (0 ft)
Barometric Pressure: 29.92 Hg
Temperature: 59° F
Relative Humidity: 50%
Speed of Sound: 1116 fps

RangeElevationElevationElevationWindageWindageWindageTimeEnergyVel[x+y]
(yd)(in)(MOA)(MIL)(in)(MOA)(MIL)(s)(ft.lbf)(ft/s)
0-1.500.000.000.030.000.000.0018182580
10-1.1010.303.000.040.390.110.0117942562
20-0.753.571.040.060.300.090.0217702545
30-0.461.470.430.100.310.090.0417462528
40-0.230.540.160.150.350.100.0517222511
50-0.050.090.030.210.400.120.0616992494
600.08-0.12-0.040.290.460.130.0716762477
700.14-0.20-0.060.380.520.150.0816542460
800.15-0.18-0.050.490.580.170.1016312444
900.11-0.11-0.030.610.650.190.1116092427
1000.000.000.000.750.710.210.1215872410
110-0.170.150.040.900.780.230.1315652394
120-0.400.310.091.070.850.250.1515432377
130-0.680.500.151.250.920.270.1615222360
140-1.040.710.211.450.990.290.1715012344
150-1.450.920.271.661.060.310.1814802328
160-1.931.150.331.891.130.330.2014592311
170-2.471.390.402.141.200.350.2114392295
180-3.081.630.482.401.270.370.2214192279
190-3.761.890.552.681.350.390.2413992263
200-4.512.150.632.971.420.410.2513792247
210-5.322.420.703.291.490.430.2613592231
220-6.202.690.783.621.570.460.2813402215
230-7.162.970.863.961.640.480.2913212199
240-8.183.250.954.331.720.500.3013022183
250-9.283.541.034.711.800.520.3212832168
260-10.463.841.125.101.870.550.3312652152
270-11.714.141.205.521.950.570.3512472136
280-13.034.441.295.962.030.590.3612292121
290-14.434.751.386.412.110.610.3712112105
300-15.915.061.476.882.190.640.3911932090
310-17.475.381.567.372.270.660.4011762074
320-19.115.701.667.882.350.680.4211582059
330-20.846.031.758.402.430.710.4311412044
340-22.646.361.858.952.510.730.4511242029
350-24.536.691.959.522.600.760.4611082014
360-26.517.032.0410.102.680.780.4810911999
370-28.577.372.1410.712.760.800.4910751984
380-30.727.722.2411.332.850.830.5110591969
390-32.968.072.3511.982.930.850.5210431954
400-35.308.422.4512.653.020.880.5410271939
410-37.728.782.5513.333.100.900.5510121925
420-40.249.152.6614.043.190.930.579971910
430-42.859.512.7714.773.280.950.589821896
440-45.569.892.8815.523.370.980.609671881
450-48.3710.262.9916.293.461.010.629521867
460-51.2810.643.1017.083.551.030.639371852
470-54.2911.033.2117.903.641.060.659231838
480-57.4011.423.3218.743.731.080.669091824
490-60.6211.813.4419.603.821.110.688951810
500-63.9412.213.5520.483.911.140.708811796
510-67.3812.613.6721.384.001.160.718671782
520-70.9213.023.7922.314.101.190.738541768
530-74.5713.433.9123.264.191.220.758411754
540-78.3313.854.0324.244.291.250.778281741
550-82.2114.274.1525.244.381.270.788151727
560-86.2114.704.2826.264.481.300.808021714
570-90.3215.134.4027.314.571.330.827901700
580-94.5615.574.5328.384.671.360.847771687
590-98.9216.014.6629.484.771.390.857651674
600-103.4016.454.7930.604.871.420.877531660

270AR

Drag Function: G1
Ballistic Coefficient: 0.433
Bullet Weight: 130 gr
Initial Velocity: 2800 fps
Sight Height : 1.5 in
Shooting Angle: 0°
Wind Speed: 10 mph
Wind Angle: 90°
Zero Range: 100 yd
Chart Range: 600 yd
Maximum Range: 5563 yd
Step Size: 10 yd
International Standard Atmosphere
Altitude: Sea Level (0 ft)
Barometric Pressure: 29.92 Hg
Temperature: 59° F
Relative Humidity: 50%
Speed of Sound: 1116 fps

RangeElevationElevationElevationWindageWindageWindageTimeEnergyVel[x+y]
(yd)(in)(MOA)(MIL)(in)(MOA)(MIL)(s)(ft.lbf)(ft/s)
0-1.500.000.000.030.000.000.0022632800
10-1.1310.633.090.040.370.110.0122292778
20-0.823.861.120.060.290.080.0221952757
30-0.541.730.500.100.310.090.0321612736
40-0.320.760.220.150.360.100.0421282715
50-0.140.270.080.220.410.120.0520952694
60-0.010.020.010.300.470.140.0720632673
700.07-0.09-0.030.400.540.160.0820312652
800.10-0.12-0.030.510.610.180.0920002632
900.08-0.08-0.020.640.680.200.1019692611
1000.01-0.010.000.780.750.220.1119382591
110-0.110.100.030.940.820.240.1219082570
120-0.290.230.071.120.890.260.1418782550
130-0.520.380.111.310.960.280.1518482530
140-0.800.540.161.521.040.300.1618192510
150-1.140.720.211.751.110.320.1717902490
160-1.530.910.271.991.190.350.1817612470
170-1.981.110.322.251.270.370.2017332450
180-2.491.320.382.531.340.390.2117052430
190-3.061.530.452.831.420.410.2216782411
200-3.681.760.513.141.500.440.2316512391
210-4.371.990.583.471.580.460.2416242372
220-5.122.220.653.821.660.480.2615982352
230-5.932.460.724.191.740.510.2715712333
240-6.812.710.794.581.820.530.2815462314
250-7.752.960.864.991.900.550.3015202295
260-8.763.210.945.411.990.580.3114952276
270-9.833.481.015.862.070.600.3214702257
280-10.983.741.096.322.150.630.3414462238
290-12.194.011.176.802.240.650.3514222219
300-13.474.291.257.312.320.680.3613982200
310-14.834.561.337.832.410.700.3813742182
320-16.254.851.418.382.500.730.3913512163
330-17.765.141.498.942.590.750.4013282145
340-19.335.431.589.532.680.780.4213062126
350-20.995.721.6610.142.760.800.4312832108
360-22.726.021.7510.772.860.830.4512612090
370-24.536.331.8411.422.950.860.4612402072
380-26.436.641.9312.093.040.880.4812182054
390-28.406.952.0212.793.130.910.4911972036
400-30.467.272.1113.513.220.940.5111762018
410-32.617.592.2114.253.320.970.5211562001
420-34.847.922.3015.023.410.990.5411351983
430-37.168.252.4015.813.511.020.5511151966
440-39.578.582.5016.623.611.050.5710961948
450-42.078.922.6017.463.701.080.5810761931
460-44.669.272.7018.323.801.110.6010571914
470-47.359.622.8019.203.901.130.6110381896
480-50.149.972.9020.114.001.160.6310201879
490-53.0310.333.0121.054.101.190.6410021863
500-56.0110.693.1122.014.201.220.669841846
510-59.1011.063.2223.004.311.250.689661829
520-62.2911.443.3324.024.411.280.699481812
530-65.5911.813.4425.064.511.310.719311796
540-68.9912.203.5526.134.621.340.739141779
550-72.5112.593.6627.224.731.370.748981763
560-76.1312.983.7828.354.831.410.768811747
570-79.8713.383.8929.504.941.440.788651731
580-83.7313.784.0130.685.051.470.808491715
590-87.7014.194.1331.885.161.500.818341699
600-91.8014.614.2533.125.271.530.838181683

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biggdawg

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Reply with quote  #4 
here is the energy chart


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Borrego Bob

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Reply with quote  #5 

6.8SPC II

Drag Function: G1
Ballistic Coefficient: 0.400
Bullet Weight: 120 gr
Initial Velocity: 2600 fps
Sight Height : 1.5 in
Shooting Angle: 0°
Wind Speed: 10 mph
Wind Angle: 90°
Zero Range: 100 yd
Chart Range: 600 yd
Maximum Range: 5161 yd
Step Size: 10 yd
International Standard Atmosphere
Altitude: Sea Level (0 ft)
Barometric Pressure: 29.92 Hg
Temperature: 59° F
Relative Humidity: 50%
Speed of Sound: 1116 fps

RangeElevationElevationElevationWindageWindageWindageTimeEnergyVel[x+y]
(yd)(in)(MOA)(MIL)(in)(MOA)(MIL)(s)(ft.lbf)(ft/s)
0-1.500.000.000.030.000.000.0018022600
10-1.1010.303.000.040.400.120.0117712578
20-0.753.561.040.070.330.100.0217402556
30-0.461.460.420.110.360.110.0417112534
40-0.220.530.150.180.420.120.0516822512
50-0.040.080.020.260.490.140.0616532490
600.08-0.13-0.040.360.570.160.0716242469
700.15-0.21-0.060.470.650.190.0815962447
800.16-0.19-0.060.610.730.210.1015682426
900.12-0.12-0.040.770.810.240.1115412405
1000.01-0.010.000.940.900.260.1215142384
110-0.160.140.041.140.980.290.1314872363
120-0.390.310.091.351.070.310.1514612342
130-0.690.510.151.581.160.340.1614352321
140-1.050.720.211.841.250.360.1714102300
150-1.480.940.272.111.350.390.1913852279
160-1.971.170.342.411.440.420.2013602259
170-2.531.420.412.731.530.450.2113352238
180-3.161.670.493.071.630.470.2313112218
190-3.861.940.563.431.720.500.2412872198
200-4.632.210.643.811.820.530.2512642178
210-5.482.490.724.221.920.560.2712412158
220-6.402.780.814.652.020.590.2812182138
230-7.403.070.895.102.110.620.2911952118
240-8.473.370.985.572.220.640.3111732098
250-9.623.671.076.072.320.670.3211522079
260-10.863.991.166.592.420.700.3411302059
270-12.174.301.257.142.520.730.3511092040
280-13.574.631.357.712.630.760.3710882021
290-15.064.961.448.302.730.790.3810672001
300-16.635.291.548.922.840.830.4010471982
310-18.295.631.649.572.950.860.4110271963
320-20.045.981.7410.243.050.890.4310081945
330-21.886.331.8410.943.160.920.449881926
340-23.826.691.9411.663.270.950.469691907
350-25.857.052.0512.413.390.980.479511889
360-27.977.422.1613.193.501.020.499321870
370-30.207.792.2714.003.611.050.519141852
380-32.538.172.3814.833.731.080.528961834
390-34.978.562.4915.703.841.120.548791816
400-37.508.952.6016.593.961.150.568621798
410-40.159.352.7217.514.081.190.578451780
420-42.909.752.8418.464.201.220.598281763
430-45.7710.162.9619.444.321.260.618121745
440-48.7510.583.0820.454.441.290.627961728
450-51.8511.003.2021.494.561.330.647801711
460-55.0711.433.3222.564.681.360.667641693
470-58.4111.863.4523.674.811.400.687491677
480-61.8712.303.5824.804.931.430.697341660
490-65.4612.753.7125.975.061.470.717191643
500-69.1713.213.8427.175.191.510.737051627
510-73.0213.673.9828.405.321.550.756911610
520-77.0014.144.1129.675.451.580.776771594
530-81.1214.614.2530.975.581.620.796641578
540-85.3815.104.3932.305.711.660.816501562
550-89.7815.584.5333.675.841.700.836371546
560-94.3316.084.6835.075.981.740.856241531
570-99.0216.594.8236.516.111.780.876121515
580-103.8717.104.9737.986.251.820.895991500
590-108.8717.625.1239.496.391.860.915871485
600-114.0318.145.2841.036.531.900.935761470

308 Winchester

Drag Function: G1
Ballistic Coefficient: .475
Bullet Weight: 168 gr
Initial Velocity: 2700 fps
Sight Height : 1.5 in
Shooting Angle: 0°
Wind Speed: 10 mph
Wind Angle: 90°
Zero Range: 100 yd
Chart Range: 600 yd
Maximum Range: 5900 yd
Step Size: 10 yd
International Standard Atmosphere
Altitude: Sea Level (0 ft)
Barometric Pressure: 29.92 Hg
Temperature: 59° F
Relative Humidity: 50%
Speed of Sound: 1116 fps

RangeElevationElevationElevationWindageWindageWindageTimeEnergyVel[x+y]
(yd)(in)(MOA)(MIL)(in)(MOA)(MIL)(s)(ft.lbf)(ft/s)
0-1.500.000.000.030.000.000.0027202700
10-1.1210.503.050.040.380.110.0126812681
20-0.793.741.090.060.290.080.0226432662
30-0.511.620.470.100.310.090.0326062643
40-0.280.670.200.150.350.100.0525692624
50-0.100.200.060.210.400.120.0625332605
600.02-0.04-0.010.290.460.130.0724972587
700.10-0.13-0.040.380.520.150.0824612568
800.12-0.14-0.040.490.580.170.0924262550
900.09-0.09-0.030.610.650.190.1023912531
1000.000.000.000.750.720.210.1223562513
110-0.140.120.030.900.780.230.1323222495
120-0.330.270.081.070.850.250.1422882477
130-0.590.430.131.260.920.270.1522552459
140-0.900.610.181.460.990.290.1622222440
150-1.270.810.231.671.060.310.1821902423
160-1.701.010.291.911.140.330.1921572405
170-2.181.230.362.161.210.350.2021262387
180-2.731.450.422.421.280.370.2120942369
190-3.341.680.492.701.360.390.2320632351
200-4.021.920.563.001.430.420.2420322334
210-4.762.160.633.321.510.440.2520022316
220-5.562.410.703.651.580.460.2719722299
230-6.432.670.784.001.660.480.2819422282
240-7.362.930.854.371.740.510.2919132264
250-8.373.190.934.751.810.530.3018842247
260-9.443.461.015.161.890.550.3218552230
270-10.583.741.095.581.970.570.3318272213
280-11.794.021.176.022.050.600.3517992196
290-13.084.301.256.482.130.620.3617712179
300-14.444.591.346.952.210.640.3717442162
310-15.874.891.427.452.290.670.3917172145
320-17.385.181.517.972.380.690.4016902128
330-18.965.491.608.502.460.720.4216642112
340-20.635.791.689.062.540.740.4316382095
350-22.376.101.779.632.630.760.4416122079
360-24.196.411.8710.232.710.790.4615872062
370-26.106.731.9610.842.800.810.4715622046
380-28.087.052.0511.482.880.840.4915372030
390-30.167.382.1512.142.970.860.5015122013
400-32.317.712.2412.813.060.890.5214881997
410-34.568.052.3413.513.150.920.5314651981
420-36.898.392.4414.233.230.940.5514411965
430-39.318.732.5414.973.320.970.5614181949
440-41.839.082.6415.743.410.990.5813951934
450-44.449.432.7416.533.511.020.5913721918
460-47.149.782.8517.333.601.050.6113501902
470-49.9410.142.9518.173.691.070.6313281887
480-52.8310.513.0619.023.781.100.6413061871
490-55.8310.883.1619.903.881.130.6612851856
500-58.9311.253.2720.803.971.160.6712641841
510-62.1311.633.3821.734.071.180.6912431825
520-65.4312.013.4922.684.161.210.7112231810
530-68.8412.403.6123.654.261.240.7212021795
540-72.3612.793.7224.654.361.270.7411821780
550-75.9813.193.8425.674.461.300.7611631765
560-79.7213.593.9526.724.561.330.7711431751
570-83.5714.004.0727.794.661.350.7911241736
580-87.5414.414.1928.894.761.380.8111061721
590-91.6314.834.3130.024.861.410.8310871707
600-95.8315.254.4431.174.961.440.8410691693

223 Remington

Drag Function: G1
Ballistic Coefficient: 0.228
Bullet Weight: 60 gr
Initial Velocity: 3240 fps
Sight Height : 1.5 in
Shooting Angle: 0°
Wind Speed: 10 mph
Wind Angle: 90°
Zero Range: 100 yd
Chart Range: 600 yd
Maximum Range: 3537 yd
Step Size: 10 yd
International Standard Atmosphere
Altitude: Sea Level (0 ft)
Barometric Pressure: 29.92 Hg
Temperature: 59° F
Relative Humidity: 50%
Speed of Sound: 1116 fps

RangeElevationElevationElevationWindageWindageWindageTimeEnergyVel[x+y]
(yd)(in)(MOA)(MIL)(in)(MOA)(MIL)(s)(ft.lbf)(ft/s)
0-1.500.000.000.030.000.000.0013993240
10-1.1811.083.220.040.370.110.0113603194
20-0.904.261.240.070.350.100.0213223150
30-0.652.070.600.130.420.120.0312863106
40-0.441.050.310.220.510.150.0412503063
50-0.270.520.150.320.610.180.0512153020
60-0.140.220.060.450.720.210.0611812977
70-0.040.060.020.610.830.240.0711482935
800.01-0.020.000.790.950.280.0811152893
900.03-0.03-0.011.001.060.310.0910842852
1000.000.000.001.241.180.340.1010532811
110-0.070.060.021.501.300.380.1110232771
120-0.190.150.041.791.420.410.129932730
130-0.360.260.082.111.550.450.139652691
140-0.570.390.112.461.680.490.149372651
150-0.830.530.152.841.800.520.169092612
160-1.150.680.203.241.930.560.178822573
170-1.510.850.253.682.070.600.188562535
180-1.931.030.304.152.200.640.198312497
190-2.411.210.354.652.340.680.208062459
200-2.941.400.415.192.480.720.217812421
210-3.541.610.475.762.620.760.237582384
220-4.191.820.536.362.760.800.247342347
230-4.912.040.597.002.900.840.257122311
240-5.692.260.667.673.050.890.276892275
250-6.542.500.738.383.200.930.286682239
260-7.462.740.809.133.350.970.296472203
270-8.452.990.879.923.511.020.316262168
280-9.513.240.9410.743.661.070.326062133
290-10.653.511.0211.613.821.110.335872098
300-11.873.781.1012.523.981.160.355682064
310-13.184.061.1813.474.151.210.365492030
320-14.564.341.2614.464.311.250.385311996
330-16.034.641.3515.504.481.300.395131963
340-17.604.941.4416.584.661.350.414961930
350-19.255.251.5317.714.831.410.424801897
360-21.015.571.6218.895.011.460.444641865
370-22.865.901.7220.125.191.510.464481833
380-24.826.231.8121.395.371.560.474331802
390-26.886.581.9122.725.561.620.494181771
400-29.066.932.0224.105.751.670.514031740
410-31.347.302.1225.535.951.730.523891710
420-33.757.672.2327.026.141.790.543761680
430-36.288.062.3428.566.341.840.563631650
440-38.948.452.4630.166.541.900.583501621
450-41.748.852.5831.826.751.960.603381593
460-44.669.272.7033.536.962.020.623261565
470-47.739.702.8235.317.172.090.643151537
480-50.9510.132.9537.157.392.150.663041510
490-54.3210.583.0839.057.612.210.682931483
500-57.8511.053.2141.017.832.280.702831457
510-61.5411.523.3543.048.062.340.722731431
520-65.4012.013.4945.138.292.410.742641406
530-69.4412.513.6447.298.522.480.762541382
540-73.6613.023.7949.518.752.550.782461358
550-78.0713.553.9451.818.992.620.802371335
560-82.6714.104.1054.179.242.690.832291312
570-87.4814.654.2656.609.482.760.852221290
580-92.4915.234.4359.109.732.830.872141269
590-97.7215.814.6061.679.982.900.902081248
600-103.1716.424.7864.3010.232.980.922011228
 
 

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Borrego Bob

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Reply with quote  #6 
Compared to a 30-06 180gr HPBT Seirra Matchking. Notice it follows the same flight path. MSR Hunting Calibers Ballistic Trajectory Chart
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Reply with quote  #7 
Here's a 3 way ballistic comparison with 308 Win with 150gr Nos BT compared to a 270AR shooting 130gr Nos BT compared to a 6.5 Grendel shooting 120gr Nos BT. Look close the 308 and 270AR follows the same ballistic path.
 

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Reply with quote  #8 
Craig, Maybe I missed it but what length barrels are you using for all of these figures? Also are you using factory loads? For the Grendel, one chart you have 123gr and the other are 120gr. I assume Hornady 123gr and AA 120gr.

Trying to comprehend the drop on the Grendel when its supersonic to 1200yards compared to the 308. I have read the 308 is only (AR Platform) supersonic to 1,000 yards with factory 168.

Just curious and reading more, the 308 in bolt gun is awesome.


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Reply with quote  #9 
For that last example i gave the Grendel 2500 which is a 20in barrel velocity against 270AR &308 20in barrels. I just wanted to use all the same bullets in the comparison in this case the Nolser ballistic tip.
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Reply with quote  #10 
Here's a nice apples to apples comparison but shooting SST. The Grendel at 2550fps with a 123gr SST vs the 270AR at 2920fps with a 120gr SST. 20in barrel velocities.



[ballistic_trajectories_chart_522a019c] 


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Reply with quote  #11 
Quote:
Originally Posted by Tedward
Craig, Maybe I missed it but what length barrels are you using for all of these figures? Also are you using factory loads? For the Grendel, one chart you have 123gr and the other are 120gr. I assume Hornady 123gr and AA 120gr.

Trying to comprehend the drop on the Grendel when its supersonic to 1200yards compared to the 308. I have read the 308 is only (AR Platform) supersonic to 1,000 yards with factory 168.

Just curious and reading more, the 308 in bolt gun is awesome.



Your probably used to "gamed" graphs comparing a 123gr Amax or 123gr Lapua Scenar to a 308 shooting a 175gr bullet. If you compare to say a 308 shooting a 150gr Nos BT its much flatter than a Grendel. They usually take the best case Grendel round and put it up to a crappy 308 trajectory and say look we have a 308 ballistic path. No not so much. Sure the Grendel can catch a 308 round at out at like 1100 yards or something but at that range who cares? Hunting is between about 20 yards and 500 yards thats where it matters. A good 308 bullet kills a grendel in the yardages that matter and a 270AR keeps that same 308 path with the energy split between a grendel and a 308.

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Reply with quote  #12 
A 200 yd Z will get you a better dead on hold. You may be an inch high at 100 but we don't have a dot on the deer to tells us missed by an inch.
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Reply with quote  #13 
I zero most of my guns at 200, so what if they are 1.3-1.8 inches high at 100. I am going tonight to zero the 270AR with my 130 pull load. it says 1.7 inches high at 100 for a 200 yard zero. 
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