Not a big diff, but Nosler shows the 7mm 140AB as .485
I notice a diff in recoil from 7/08, 260, and 243 and owned many in each fwiw.
If I need a bigger 'WALLOP' in a short action on an '08 case than a 6.5/7mm version, then I will jump over the 30 and get a 338 bore for greater frontal area.
That said, I think for paper thru deer, the 243 is proven, and if going for game thru elk, would rather run a 260 or 7/08 myself, just personal choice. No doubt 308s work, but in my book, they'll kick more...and have an inferior trajectory.
All will work when proper bullets hit and destroy vitals, regardless of headstamp. Since I enjoy burning some rounds downrange to practice/learn, I like to use the least recoiling round that gives solid killing effectiveness and good trajectory - for the job at hand.
