Thread: Shorter Barrel 223 data

Originally Posted by Tentman

Hello Folks

I recently changed from an 17.75"/450mm Bergara B14 EH stainless barrel to a Bergara B14 St chrome moly barrel at 16.5"/420mm, both in 223.

The 16.5 is still being worked up but initial velocities are very interesting (to me at least!) when compared with the 18" (nominal) given that I have some direct comparisons, with more to come. Most samples are 10 rounds.

Fiocchi Factory (Red box) 55gn 16.5" 3030fps 18" 2982 (cool day) 3020 (hot day) fps
Sako 55gn. 16.5 2990 fps 18" 2984fps
ADI 62 gn. 16.5 2857fps 18" 2848fps

I'm not looking at this from the perspective of maximum speed, rather that two otherwise pretty much identically made barrels from the same company can be different!

Greetings,
You would expect a difference of around 30 fps between the two barrels with the longer one the faster all else being equal. All else is seldom equal though. The round count, if known, would be interesting as would has either been chopped?
GPM.