gas block position

[Spook]

Is the carbine position in the same place on a "10" as it is a "15"? Getting ready to do a 338 whisper barrel and cant decide between the pistol or carbine position.

[98Z5V]

Carbine-length, mid-length, and rifle-length gas systems will always be the same length, respectively, from the front of the upper receiver.  They're each a fixed distance from the bolt carrier gas key. 

Is that what you're meaning?

[Spook]

That is what I suspected by virtue of the available gas tubes. Is there data somewhere depicting where on the barrel the gas port gets drilled for the respective lengths and diameters perhaps?..BTIA