Thanks for the info.
I guess the extended baffle is just to limit bolt travel with shorter cartridges?

The stock she liked was the LPBR from SSS.
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Got an e-mail reply from Lisa and it can be done closed bottom.
It is already pillar bedded. Maybe a 4 to 6 week delivery (maybe?).
I can add the loading ramp.
The only thing is mailing the order form that seems different from any other suppliers.
Since I don't see this heavy rifle being used for anything but prone slowfire the closed bottom/loading ramp seems like a good fit for her style.
Need to make a decision on stock because I have all this money just burning a hole in my pocket :)

So far I have ordered Receiver, barrel, barrel nut and recoil lug. Have access to wrench and vice.
Ordered the 6.8 bolt head, stripped from PTG then found Grizzly has it in stock with free shipping. Oh well.

Will need bolt head completion parts. (I have 3.5mm ball bearings already, about 0.138").
Adding a couple kits in with the stock order would save a separate shipping charge.
Will need a .223 bolt head, sometime before barrel gets here.
After it's been shot I will look into a Rifle Basix SAV-2.
Black Friday/Cyber Monday is just to far away. Maybe.