I like 23" tubes, have one and a custom sts 22.5"er, but, there is more muzzle blast and I find no difference in portability.
So, I would go sts cutrifled No 3 at 24" if I were to now build my "dream" .338WM and would gio 4+1 to about 8.25 scoped.
I shoot 250s largely due to the 210NP would not group well in my original P-64 Alaskan, while 250s do sub-moa. I like to keep things simple with the same trajectories as I am old and not very bright......works for me since January, 1968.
