Using different propellants with different burn rates in rounds could potentially achieve better pressure distribution and better acceleration in short barrels.
Different burn rates of propellants refer to how quickly the propellant burns and produces gas to propel the bullet. Propellants with faster burn rates tend to produce more pressure and acceleration at the beginning of the burn, while propellants with slower burn rates tend to produce less pressure and acceleration at the beginning of the burn, but more pressure and acceleration as the burn continues.
When using a short barrel, the pressure and acceleration need to be distributed in such a way that the bullet has enough time to exit the barrel before the pressure becomes too high and causes damage to the gun or injury to the shooter. By using propellants with different burn rates, it is possible to achieve a more gradual and controlled burn that can help to distribute the pressure and acceleration more evenly over time.
However, it's important to note that this is a complex process and the selection of the propellant will depend on the specific characteristics of the weapon and the bullet. The burn rate of the propellant needs to be well matched with the caliber, weight and length of the bullet, and the length of the barrel. Additionally, the combination of different propellants with different burn rates will also affect the accuracy of the round.
In summary, using different propellants with different burn rates in rounds could potentially achieve better pressure distribution and better acceleration in short barrels, but it's a complex process that needs to be carefully designed, tested and optimized.
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