Catshooter, I have a brand new 6 BR in the shop 1-12 twist Lilja, 28" long, zero freebore. I hope to get it in the stock tomorrow. I'm going to see if it likes 335 and 2230....you don't know, till you know. What ever it likes is what I will like. I too have never had a 6 BR that did not like H322 with the lighter bullets.
A buddy of mine is shooting the 55's at 3850, safely without wrecking his lapua brass with AA2230.
I got the 1-12 twist lilja because I found a deal on it, and justified it by:
some of the longer bullets that I shoot on a .900 jacket. Also, the 70g Blitz king can be kinda iffy in a 14 twist if it in fact ends up a 1-14.5 twist by mistake. That sounds like reason enough to buy a barrel, eh?
I'm not excessive compulsive, just extremely well focused.