[mwebb]

the military had a similar idea
Tubular bullets
they did extensive testing many years separated the testing events , both sets of tests showed that the tubular bullets did not reduce drag

from the spitzer boat tail shape

which is the shape of bullet with the least amount of drag as proven in the real world more times than can be counted .
which contradicts all of the thoughts on aerodynamics regarding the front of a car in this forum .

however a bullet spinning at 100k rpm traveling at faster than the speed of sound
is not a car .
none the less
there are no round nose boat tail bullets
and the round nose flat base bullets have terrible ballistic coefficients compared to
spitzer (pointed) boat tail bullets

just a thought