Muzzle velocity and energy from midlengths

[cancer]

Does anyone have any links to charts showing muzzle velocity or energy out of a 16" midlength AR compared to a full 20" or carbine length 14.5" AR?

 

[TDC]

If I remember correctly the mid-length(or 16"carbine) barrel length will achieve 94% of the performance that a 20" does. I'll dig for the info and post it.

TDC

 

[toxic]

How about some chrony numbers from my 16' RRA from saturday?
Ammo was remington 55 grain FMJ.

2833
2903
2880
2869
2894
2915
2909
2914
2914
2878

Don't know if this helps but it was too much of a coincidence to have played with the chrony on the weekend.

 

[cancer]

Thanks for the info. I believe M193 is to have a muzzle velocity of 3250 +/-40 fps from a 20" barrel.

Anyone have specs for a carbine?