Barrel lenght is one of the things that will affect bullet velocity. But for some cartridges barrel lenght is not as important. From what I`ve heard the 7mm 08 and the 308 Win will not suffer as much as say 300 Win Mag.
What about the short magnums ???? Ruger offers their 300 RCM and 338RCM with 22" barrels, as their "ordinary" magnum offers come with 24" barrels.
Or will a 22" barrel reduse a 270 Short Mag down to ordinary 270 Win level, and a 300 Short Mag down to 30-06 level ????
Have not calculated speed or anything, just curious. The Short magnums are after all based on a short-fat design like the 7mm 08 and the 308 Win.
What about flash and sound, I suppose it will be more of each from a shorter barrel ?