Just to set the record strait

Here is your 243AI (that you suggested would compete with the 2506) with a 100gr bullet at 3300fps. (I dont think you can get it that fast but I did it anyhow)

[img width=600 height=364]http://i5.photobucket.com/albums/y155/outlawkyote/scan0001.gif[/img]

Here is my 2506 (plain jane) with the 100gr bullets at 3400fps ( thats how fast I run them)

[img width=600 height=337]http://i5.photobucket.com/albums/y155/outlawkyote/scan0002-1.gif[/img]

Here is "my" 2506AI with the 100gr bullets running 3850fps (this is my recent velocity I was getting with my 2506AI)

[img width=600 height=329]http://i5.photobucket.com/albums/y155/outlawkyote/scan0003-1.gif[/img]

Here is your 270wsm with 100gr bullets at your suggested velocity of 3600fps.

[img width=600 height=345]http://i5.photobucket.com/albums/y155/outlawkyote/scan0005.jpg[/img]

my printer might be running out of ink but your balistic calculator isnt working right either
Looks to me as though the plane jane 2506 actually beat out the 243AI and my 2506AI beats your 270wsm out by a large margin.
These calculations are based on "published BCs" and not calculated BCs based on velocity. As we all know, the higher the velocity, the higher the BCs.