Why bother with the belt at all ? Just neck down 270 WCF enough to form a false shoulder for the case to headspace on and fireform them. Once done the case will headpace on the shoulder (as all rimless cases should, belted or not). As the belt serves no purpose in extraction and is well into the solid portion of the case, there is no issue with head expansion.
As long as you don't push the shoulder back in future reloadings, you should have no problems.
I'd still but the WB brass. For a rifle with a 1500 round barrel life $1.50 a case is cheap.


Hey NSAQAM, Larry is very "IN", LOL
You also dishonor the 28th division by using the unit patch as an insult.
As for the liar, welcher Bricktop, his day is fast approaching.
Coward trolls won't accept PMs.
How's the phantom "campfire" coming ?