WSM's and short barrels?

[salukipv1]

It seems the standard WSM barrel is 24"

Browning uses a 23", which I assume on the .300wsm isn't a big deal, but on the 270wsm, I would think it's getting short?

Sako uses a 22-7/16" 270wsm barrel, and a 24-3/8" 300 wsm barrel.
ie they use their 270win barrel for their 270wsm barrel, and same for the 300win.mag/wsm barrels.

going from 24 to 23 or 24 to 22-7/16" probably isn't much but when say the 270wsm deserves a 26" barrel, going to 23 or less, could be a big deal don't you think?

Are factory 270wsm ballistics taken from 26" barrels? 24" barrels?

Your thoughts??

[Ridge Runner]

any centerfire rifle achieves higher MV with a longer barrel to a point. a 223 will achieve higher mv over a 22". I shoot a 6.5 based on a 270 case with a 29" barrel and surpass factory 264 win mag loadings by quite a bit. why would the 270 wsm need a longer barrel than the 300? it will not match the 300 in MV with the same weight bullet unless you run higher pressures.
RR

[Sheridan]

"Most" published factory ballistics are taken from 24" barrels.