I know this is an old thread but thought I'd throw in my $0.02.
I have one in 223 and shoot 90 grn HSM ammo exclusively in it - and it is the most accurate rifle I own. Consistent, consistent 0.2-0.4 ctc 5rds at 100.
My 223 Tikka is close - but only with match 77 grn loads.
My AI-AT isn't as...