I would even say that there is probably no significant drop in velocity if you are using the Boss-CR since it does not have the ports and is a full 26".
I just want straight FACTS discussed and not opinions or misguided falsehoods.
The length of actual rifled barrel is not 26".Once the bullet leaves the rifled barrel and enters the CR,the bullet to barrel seal is broken,and the pressure is allowed to escape past the bullet no longer helping to increase velocity as it did in the rifled part of the barrel.That is a fact.