Let's say we fire the 2 identical powder loads during the same range session, a 30-06, one with your typical spitzer boat tail shape another with a round or a flat nose, same bullet weight.
Same thing, let's say, for a 30-30....2 identical loads both 170 gr, one round nose, the other flat nose.
How affected will be the muzzle velocity beyond the typical normal variance you always get between different shots ?? I did some research on the web but I could not come with any meaningful info on the topic.
Intuition tells me that air resistance should affect the bullet even inside the barrel...a more aerodynamic bullet will have less air resistance for the propelling powder gases during the acceleration phase (other things being equal such as the friction generated from the rifling)....right???
My ballistics books and manuals talk about air density and temperature....less density will result in flatter shooting but if the less density is because of change of altitude your load could perform less because of the potential drop in temperature (colder powder and case affects muzzle velocity) so the 2 things partially offeset each other.
In general hotter days will results in higher muzzle velocity (and higher pressures) and vice versa.
But I don't have any info about how bullet shape affects muzzle velocity.
Thanks!
Same thing, let's say, for a 30-30....2 identical loads both 170 gr, one round nose, the other flat nose.
How affected will be the muzzle velocity beyond the typical normal variance you always get between different shots ?? I did some research on the web but I could not come with any meaningful info on the topic.
Intuition tells me that air resistance should affect the bullet even inside the barrel...a more aerodynamic bullet will have less air resistance for the propelling powder gases during the acceleration phase (other things being equal such as the friction generated from the rifling)....right???
My ballistics books and manuals talk about air density and temperature....less density will result in flatter shooting but if the less density is because of change of altitude your load could perform less because of the potential drop in temperature (colder powder and case affects muzzle velocity) so the 2 things partially offeset each other.
In general hotter days will results in higher muzzle velocity (and higher pressures) and vice versa.
But I don't have any info about how bullet shape affects muzzle velocity.
Thanks!