Since I have a bunch of both I thought I would give them a go in my 338 Winchester. Here is what I found today. This was chrono work no groups measured.
Superformance. 225 Sierra Federal case & WLRM primers.
70gr.-2673
71gr.-2710
72gr.-2770
73gr.-2808
74gr.-2858
75gr.-2906
76gr.-2913
Hunter. 225 Sierra same case and primer as above
72gr.-2823
73gr.-2845
74gr.-2869
75gr.-2945
76gr.-2958
The Rifle is a Tikka T-3 Lite SS
All ejected easily and showed no signs of pressure.
Also shot.
IMR 4350 71.5 gr. 225 Hornady IB same cases and primers. 2887 fps and 3 shot group 1 7/8" at 220 yards.
H4350 69.5gr. 225 IB same case & primer. 2861 fps and 2" group at 220 yards.
