Barrel stiffness & weight, profile vs cross section

[59FLH]

I am going to re-barrel a 700 action in 280 AI using Remington factory contours only and I have questions about the barrels listed below.

The barrels are:
1. 24" Sporter
2. 26" Magnum Sporter Fluted

The questions are:
Which barrel will be stiffer?
What is the aprox weight of each barrel?

Substitute Sendaro contour if barrel 2 (mag sport) can not be fluted.

I am looking for my ideal combination of stiffness and weight.

 

[Dusty Stevens]

youll never see the difference in 1&2. you can flute the #3 taper barrel listed as barrel #2 as well as the #2 taper barrel you listed as barrel #1. the sendero taper changes everything. its not even in the same class as your other 2 choices. it will require a different stock as well