How long is the "effective" length of the 8" Crown Point barrel?

[A.T.S]

How long is the "effective" length of the 8" Crown Point barrel?

[Cryer]

according to TKs theory, up to the beginning of the porting/muzzle break. So about 7"

according to TKs theory, up to the beginning of the porting/muzzle break. So about 7"?

[FooTemps]

i'd say something more like 7.5 inches because the ball is already in the barrel at the start of the cycle.

[A.T.S]

If someone has this barrel, can you measure the distance from the front edge of the feedhole to the beginning of the porting?

[A.T.S]

up