Cincinnatus
05-14-12, 12:15
The effects of barrel length on Muzzle Velocity are documented in various places, and, of course, depend on the load fired. (One such place is this: http://counterstrikefox.freeservers.com/mv.htm , though he used a Bushy for the test.)
But beyond just Muzzle Velocity, what is the difference in effective range between a 14.5" carbine-gas barrel and a 16" middie?In other words, what is the range at which each barrel drops below the fragmentation velocity of 2700 fps?
This page offers some information (http://sadefensejournal.com/wp/?p=1093 ), but does not answer the question of effective range. It studies "uncorking" pressures at the muzzle and muzzle velocity, but not range.
For the sake of discussion, lets assume the load being fired is 75gr. Hornandy TAP in 223.
I do not expect the fragmentation range to differ significantly between the two barrel lengths, but would like information to find out the difference anyway.
(If anyone has links to a similar topic on M4C, please provide them--search did not turn up anything on this specific question, but I may have been too specific in my terms)
Here is another thread asking a similar question, but the question was never answered therein:
https://www.m4carbine.net/showthread.php?t=92171 and another that also does not have an answer: https://www.m4carbine.net/showthread.php?t=47267
I am not anything approaching an expert on ballistics, so if this question is phrased inanely or incorrectly, please school me. The greatest thing about M4C is its educational function in enlightening those of us unversed in the topic at hand.
But beyond just Muzzle Velocity, what is the difference in effective range between a 14.5" carbine-gas barrel and a 16" middie?In other words, what is the range at which each barrel drops below the fragmentation velocity of 2700 fps?
This page offers some information (http://sadefensejournal.com/wp/?p=1093 ), but does not answer the question of effective range. It studies "uncorking" pressures at the muzzle and muzzle velocity, but not range.
For the sake of discussion, lets assume the load being fired is 75gr. Hornandy TAP in 223.
I do not expect the fragmentation range to differ significantly between the two barrel lengths, but would like information to find out the difference anyway.
(If anyone has links to a similar topic on M4C, please provide them--search did not turn up anything on this specific question, but I may have been too specific in my terms)
Here is another thread asking a similar question, but the question was never answered therein:
https://www.m4carbine.net/showthread.php?t=92171 and another that also does not have an answer: https://www.m4carbine.net/showthread.php?t=47267
I am not anything approaching an expert on ballistics, so if this question is phrased inanely or incorrectly, please school me. The greatest thing about M4C is its educational function in enlightening those of us unversed in the topic at hand.