Hello TT,
I am not aware of any manufacturer that based on the that alone offers a propensity to either short or long barreled firearms...
Its a Ford vs Chevy kind of question...
BOTH offer a number of good selections.
Personally, The caliber gives you a good idea of a number of potentially good powders. But, I let the gun itself decide on what powder I will use in it.
My guns like IMR 4350 for the 243, H-335 for the 7/08 and IMR 4320 for the 308. I do not own a .260, But my 6.5x55 likes H4895 and my 6.5x63 likes IMR 4350.
CW