Sectional density is calculated by comparing the bullet weight and the bullet diameter, the higher the number the more effective it will be at penetrating a target. The higher the SD the deeper the bullet will penetrate the target. The numerator or dividend is the number 270, and the denominator is the number 30. There are three ways to express the same thing: a quotient, a ratio, and a fraction.

Edinburgh Rifles nailed it: 1" in difference ( maybe ) at 300 yards between .270 with 130-gr and .308 with 150-gr bullets. standardised, where possbile, on D65 light with a standard observer according to CIE 1964 which may be The same situation is true for ammo. There are simply more factory loads for 30-06 than 270 Winchester as the 30-06 has been around longer as was heavily utilized by the US military in the early part of the 20th Century. Before you continue, note that in the problem 270 divided by 30, the numbers are defined as follows: Multiply the divisor by the result in the previous step (30 x 9 = 270) and write the answer at the bottom:A heavier rifle will typically impart less recoil onto your shoulder, the same can be said for lighter-weight bullets. What’s great is that you can remove the hopper without emptying it. A small lever on the side will close off the chute at the bottom. Not only has the 30-06 seen massive success on the battlefield, but it has seen immense commercial success in the civilian market as well. Big game hunters loved the amazing terminal ballistics and long-range that the 30-06 offered while having a recoil impulse that is not punishing to the shoulder.

All the major firearm manufacturers like Remington, Winchester, Savage, Ruger, and Weatherby make rifles chambered in both calibers.

As the case capacity between the two is virtually identical, it makes sense that the 270 Win would have a higher maximum pressure as we are shooting smaller projectiles with the same powder charge. This will naturally lead to higher pressures. Recoil