Im likely going with a barrel nut design for the same reason. I just need to decide if i want to sell a couple rifles, one of them i really like too. Even a small shank barrel can handle some really stiff loads but the room for error is virtually nill.

The new Kash 750-ML action is based on the Rem700 but it takes Savage large shank barrels. There is just way more "stuff" available for the Rem700. It will be a pricey build but i should be able to get around $2200-2300 for the 2 rifles. One i hardly ever shoot except for fun.

Right now im at
Kash Action...about $715
TriggerTech Trigger...around $130
Brux 458 1-20...around $465

Still need to decide if i want a $200+ LRMP setup or a sub $100 209 setup and a stock. My biggest problem is weight. I dont want to end up with another 11lb+ rifle. I already have one of those. Ive seen the barrel i would like but its setup as a RemAge and its $800 with the LRMP plug/25 modules.

If you already have a Rem700 action shell out the $800 and dont look back. This barrel should be quite a bit lighter. At 28" its only .750 but the shank is 6" long instead of the usual 4-5". Comes complete with nut. plug and 25 modules. All you need is a lug for it. Northland sells RemAge lugs if you want it pinned.