Calibre is 243.
The current action/barrel combo is factory.
The swap barrel is a New, take-off, also Rem700, also 243, bought on CGN.
Both barrels are the powder coated sps type.
I don't know what indexing is but what I want is for a barrel/action fit that is equal to or better than a factory would be.
It is intended to be a very compact and quick hunting rifle. I don't think I need match grade precision.
I was under the impression that a good snug, torqued fit would be sufficient as it will be free floated and scoped.
Does that answer your questions?