I played around considerably with 180gr class with a NAB, GMX, and TTSX offerings. Both of these rifles shot the 200gr bullets better. Does it have something to do with the 1:9 twist? I do not know.
I did have a Model 70 classic wood stainless featherweight with a 1:12 twist that shot the 180 NAB better than the 200gr. A good friend bought it from me because he has a weakness for wood stainless rifles.
I should try the plain 185gr TSX and see if that shoots better than the TTSX. I see Barnes makes a 285gr TSX, that might be fun to experiment with too.
