I have both the 53gr TSX and the 50gr TTSX in my reloading room. Both say minimum twist is 1-12. I think the 45 and 50gr TSX FB are the only ones that Barnes recommends for a 1-14. However, I do hear a lot of people on here getting the others to stabilize in slower twists. Maybe higher altitudes? I'm fairly close to sea level down here in MS.

Those who must raise their voice to get their point across are generally not intelligent enough to do so in any other way.