I was routing around my reloading notes yesterday for the 300WSM from back in 2001 or thereabouts...72 grains of RL22 with the 165 Partition and BBC showed 3125 from a 24" M70FW,and accuracy was really good to 400 yards.

Interesting thing is the exact same load and bullet in the 300H&H did 3150 in a 26" M70 barrel.



The 280 Remington is overbore.

The 7 Rem Mag is over bore.