....... a minimal gain in velocity that will really gain you nothing with the chamberings you’re talking about.
If you want to huck bullets at higher velocities, just get [/b]something with more engine room[b] and stick with a shorter handier package. Just my .02
To put this in layman's terms.
The 358 doesn't have a large powder magazine (capacity) to benefit much in 4" of additional barrel length.
Where you see the gain/loss in longer/shorter barrels is in rounds LIKE 25-06 / 270 / 06 and the magnums. The 308 suffers from the same limited powder capacity. AS your bore increases in dia. the longer barrel does NOT add a lot to vel. increase *** in small capacity cases***.
Jerry