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No question between the two....30-06... here's a sample of similar projectile, I even list the .270 with a higher B.C. rating to help it out. still not enough to justify a choice over the performance and available uses the 30-06 has over it.

Numbers are listed in order starting with range, FPS, energy, bullet path and M.O.A. numbers are starting factory loads. since I don't know if you reload.



Trajectory for Federal Cartridge .277 dia. 270 Win. 150 gr. Nosler Partition at 2850 Feet per Second
At an Elevation Angle of: 0 degrees
Ballistic Coefficients of: 0.466 0.466 0.466 0.466 0.466
Velocity Boundaries (Feet per Second) of: 2280 2280 2280 2280
Wind Direction is: 3.0 o'clock and a Wind Velocity of: 2.0 Miles per hour
Wind Components are (Miles per Hour): DownRange: 0.0 Cross Range: 2.0 Vertical: 0.0
The Firing Point speed of sound is: 1120.27 fps
The bullet does not drop below the speed within the max range specified.
Altitude: 4500 Feet Humidity: 70 Percent Pressure: 29.53 in/Hg
Temperature: 59 F
Data Printed in English Units
Range(Yards),Velocity(Ft/Sec),Energy(Ft/Lbs),Bullet Path(inches),Bullet Path(1 MoA),Wind Drift(inches),Wind Drift(1 MoA),Time of Flight(Seconds)
0,2850.0,2704.9,-2.0,0.0,0.0,0.0,0.0000
100,2680.6,2392.8,1.42,1.4,0.12,0.1,0.1085
200,2517.5,2110.5,0.0,0.0,0.48,0.2,0.2240
300,2360.0,1854.7,-6.91,-2.2,1.1,0.4,0.3471
400,2208.2,1623.8,-20.07,-4.8,2.02,0.5,0.4785
500,2062.0,1415.9,-40.36,-7.7,3.27,0.6,0.6191
600,1921.6,1229.6,-68.84,-11.0,4.87,0.8,0.7699
700,1787.4,1063.9,-106.75,-14.6,6.86,0.9,0.9318
800,1660.1,917.8,-155.55,-18.6,9.29,1.1,1.1060
900,1540.6,790.4,-216.98,-23.0,12.19,1.3,1.2936
1000,1429.9,680.9,-293.09,-28.0,15.6,1.5,1.4959


Trajectory for Federal Cartridge .308 dia. 30-06 150 gr. Nosler Ballistic Tip at 2910 Feet per Second
At an Elevation Angle of: 0 degrees
Ballistic Coefficients of: 0.434 0.434 0.434 0.434 0.434
Velocity Boundaries (Feet per Second) of: 2328 2328 2328 2328
Wind Direction is: 3.0 o'clock and a Wind Velocity of: 2.0 Miles per hour
Wind Components are (Miles per Hour): DownRange: 0.0 Cross Range: 2.0 Vertical: 0.0
The Firing Point speed of sound is: 1120.27 fps
The bullet does not drop below the speed within the max range specified.
Altitude: 4500 Feet Humidity: 70 Percent Pressure: 29.53 in/Hg
Temperature: 59 F
Data Printed in English Units
Range(Yards),Velocity(Ft/Sec),Energy(Ft/Lbs),Bullet Path(inches),Bullet Path(1 MoA),Wind Drift(inches),Wind Drift(1 MoA),Time of Flight(Seconds)
0,2910.0,2820.0,-2.0,0.0,0.0,0.0,0.0000
100,2725.9,2474.4,1.34,1.3,0.12,0.1,0.1065
200,2549.2,2164.0,0.0,0.0,0.5,0.2,0.2203
300,2379.2,1885.0,-6.7,-2.1,1.16,0.4,0.3422
400,2215.7,1634.8,-19.54,-4.7,2.13,0.5,0.4728
500,2058.6,1411.2,-39.48,-7.5,3.44,0.7,0.6133
600,1908.2,1212.6,-67.63,-10.8,5.14,0.8,0.7647
700,1765.1,1037.5,-105.34,-14.4,7.27,1.0,0.9282
800,1630.1,884.8,-154.23,-18.4,9.87,1.2,1.1051
900,1504.3,753.6,-216.22,-22.9,12.99,1.4,1.2968
1000,1389.1,642.6,-293.61,-28.0,16.67,1.6,1.5044