OK, thanks for all the advice and opinions... I am going to drop the $$$ for a Leica 2000-B rangefinder.

Given:
My 280 is an M700 CDL dropped into a B&C 2265 Alaskan Ti, Talley ltwts, and Conquest 3-9x40 Z-Plex
The complement is an X-Bolt Medallion in 300 H&H... still have not decided on a scope... any thoughts on scoping the 300? scope/ reticle choice needs to offer something the Conquest and Vortex do not
The freezing cold wet lousy weather rifle is M77 Mk II in 300RSAUM with Vortex 3-9x40... duplex

I hope to get out to Quantico 1000m range next year to see what I can accomplish with each rifle set-up and that 2000-B; to gain confidence in how far i can really shoot for a Western hunt in CO or WY.

reloads: hope to settle on a 140 or a 150 in the 280, and something between 165 to 200 in the RSAUM
Factory ammo: will stick to factory in the H&H... 180 Hornady, 185 Berger VLD from HSM, and Federal 180 TBT... whatever is most consistent.

next decision in the critical path is what scope for the 300 H&H

thanks in advance...