There is no doubt that the 250 gn RN Woodleighs would give very good expansion and penetration at the velocity that should be achieved in the 358 Win.
However, some 358 Win rifles will have a chamber throat length cut to suit spitzer profile bullets, and these could be too short to allow a 250 grain round nose to be seated out far enough to fit enough powder into the smallish capacity of the 358's little case, to achieve the desired velocity.
Lengthening the throat is an option, but this could cost veocity with spitzer bullets.
Trying to seat the heavier bullets out further in order to get enough powder in can also create dramas with the short magazine length found on some .358 Win rifles.
I've bin there done that.
The solution might be to try and talk Geoff into doing some 250 gn .358 Woodleigh PP's.