[MtnClimber]

I wonder if they are going to develop a 30 cal bullet with great sectional density to give better long range performance?

[Article10]

Thank NSW Dev-gru for this system.

With the 220gr Sierra leaving the muzzle at 2985 fps... sectional density is secondary

[Manly Warrior]

Sectional density is nothing more than weight/caliber-You may be referring to drag coefficient- the “slipperyiness” factor that enable a bullet to travel farther due to higher retained velocity. That is a function of bullet shape and length, not mass. For example, a Sierra Match King Palma 155 is a 30 cal bullet with a coefficient of around .54 G1, while a similar 155 Match king which is the same weight (therefore the same Sec Density) is only .35 G1.

These 300 Win Mags are shooting 210 to 240 grain bullets that run G1 coefficients around .650-.750, and the 300 win mag case allows adequate powder capacity to enable moderate muzzle velocities to take advantage of these ore efficient bullets.

Smaller calibers can produce similar long range performance trajectory wise, but take too much off the table energy wise, and it is KE that penetrates/kills.

[VRWCarea51]

180 grain Nosler Protected point Partition bullet has been dropping Elk, Deer, Mule Deer for over 2 decades for me with my .300 Win. Mag.

Alot of bullet retention with great expansion.

[Darth Mall]

Bump for later