I have a PacNor barrel on a Ruger in 22.250. I originally bought the barrel and had it mounted on a Ruger 223.
I later sold the rifle with the original factory barrel and had it rechambered and put on a 22.250.
the Pac Nor had a one in 7 twist, and was 24 inch Stainless Steel.
75 ELD=M shoot quite well in it, even at 300 to 400 yds distances on targets at our local range.
don't know if the 1 in 7 twist, helps that much over the 1 in 8 twist.
I asked old buddy that across a hunt camp fire, he said 8 twist in his Tikka was fine, iirc he's bootin em out at around 3400 fps with 100v/staball 6.5 or CFE 223, i'd call and ask but he's up in the Dakotas on a pipeline job.
