Not many loads will get 3200 fps in the 264 that Winchester originally optimistically claimed. People believed it and kept adding powder until they got there but who knows at what pressure? Due to the pressure difference the 264 can come close to the 7RM or within 75 - 100 fps. I can't get more than 3,175 fps with 140s in the 7RM with book loads so what little difference there is the 6.5 will catch up to due to a better BC within 400 yds. or so.
There's SAAMI pressure and then there's Campfire pressure...
DF
