Searching for the barrel length formula thread

[pyplynr]

Does anyone remember where the thread is that had the barrel length/finished muzzle size formula in it? Been looking for over an hour and can't find it. Trying to figure out what contour to go with on my upcoming build. Thinking a Palma contour with a muzzle dia. around .800 finished @ 24".

Thanks

 

[pyplynr]

Re: Searching for the barrel length formula thread

Nevermind. Finally found it.