I'd never taken a close look at the 147 vs the 130 ELDM ballistically. I assumed the superior G1 of the 147 would rule the day. However, according to Gordon's sim, at 3100 MV vs 3300 MV in a 6.5 WSM, the 130's speed gives it the drop advantage and almost makes up for the 147 windage advantage. At 500 its essentially a tie in windage and at 800 the 147 only has a .2 mil advantage.
147 @ 3100
130 @ 3300
The powder is also essentially a wash at 71 grains of N560 vs 70 grains of N565, and according to Bison the recoil is also a tie.
I have N565 and 147 on hand for my load dev, and although the 130 has slightly better drop and time on target, I don't think its significant enough to change direction. The higher MV may also decrease barrel life faster on an already short lifespan.
EDIT: One significant advantage the 130 may have will be the ability to maintain faster MV in a shorter barrel without sacrificing downrange performance. This I will keep in mind if I decide to go the short route. Upon quick review the same 71 grain load should theoretically still deliver 3,000+MV in an 18" barrel. However, the burn rate is 93% and H4350 (sub 90% fill rate) and Accurate 4350 (92% fill) deliver 3,000 MV with 100% burn.