243 , 30-06 , 300 WM and 300 Weatherby
243 and 30-06 works best with heavier projectiles
243 with 1/10 or 1/8 twists works well with it

While the 300’s seem to work well with 130gr TTSX and up
The 200gr SGK works good in the 06 and 300’s
with this powder
Kenneth