Re: Barrel Conditioning "Wow"
Maybe you got some duracoat into the muzzle ? I find it hard to imagine that there is a 223 on the planet that can't stabilize a 40gr Vmax ? I had a Remington with a 1:12 twist and I shot 55gr from that. Now try 75gr + particularly VLD's and it is a different story.
Whichever way, there is no substitute for a proper match barrel. Howa are made in Japan, so they probably beat Remington and Savage handily on quality, but there are no Shilen.