Re: new 22-250
I have the same rifle. It has the 1-14" twist. I have only tried bulles in the 40-55gr range. Mine hasn't shown a preference for the 55's at all. It absolutely sings with 40gr Ballistic Tips and 52gr Sierra MatchKings. I reload and haven't tried any factory in mine.
I did try the Hornady 50gr V-Max (factory fodder) in a previous "Varminter" (.22-250Rem) that I used to own and it shot .5".
I think you'll find the .22-250 is a pretty accurate caliber and fun to shoot. Good luck, keep us posted. Johnny K.
"The pleasure you get from life is equal to the attitude you put into it."