You should have entitled this thread try the REALLY obvious!!! Guys, the FAQ's at the top of the page lists the .243 as having a 1 in 10 twist. Many of us feel perhaps they should change the twist rate on a couple of their barrels but they aren't hiding it, it's all out there for us to anguish over. The FAQ's might be a good place to check before we try to work a load for our pet guns....<><.... :grin: (oops! just re-read your post, yours is 2 in 12"? That is strange, I would think a call and new barrel is in order if you bought it thinking it was the advertised 1 in 10"...)