Mike - did you rust blue the barreled action?

In view of the speeds and accuracy with the loads shown, I'd stick with the Woodleigh or even Hornady 160's for everything.

If you are going to drive the 130's or 140's to about 2,500fps, then perhaps they might add some range for you and be useful. Othewise, such low speeds with a premium bullet is wasted money, in my opinion.

I'd be happy with a 2,200fps to 2,300fps 160gr. load, but not with a 2,200fps 140.

My Daughter is shooting 160gr. Sierra RN's in her .260Rem., with a mere 33.0gr. H4895 - virtually no recoil. that is a 55gr. capacity case, so the speeds are down in the range your Mann. is providing.