Wouldn't a large portion of those gases be purged when the bolt opened for ejection?
H&K made a caseless assult rifle that could fire a three round burst that may have had 2 bullets in the barrel at once..
Sounds like a job for myth busters or red jacket to me. Maybe that's why they use multiple barrels on chain guns in addition to keeping the barrels from melting.
Sure, duplex ammo.
All of the calculations so far have longer times in the barrel than posted. The velocity is not constant in the barrel, but rather acceleration is occuring. The muzzle velocity is only the velocity at the muzzle, increasing time in the barrel since the bullet is not moving at powder ignition.
well of course, but if i were smart enough to calculate the time spent in the barrel from zero velocity to max muzzle velocity i'd probably have a high paying job with the space administration designing wicked star fighters or something else cool. sometimes you just gotta leave out the varibles and go with what you got.
It still is not possible to have 2 bullets in the barrel with any technology that we have today. The closest thing would come from caseless cartridges.
I think the debatable part of this isn't just can two bullets be in the barrel, but they have to have independent propellent systems to actually have a talk worthy discussion. IDK the actually outcome, however just having one discharge with two projectiles kinda defeats the purpose of the OP.
The velocity is not constant in the barrel, but rather acceleration is occuring.