toad,
3400 fps from 140s in .264 is kind of a red flag.
just sayin'
Some barrels are slow and some are fast. This is probably not the first load he's worked up.
Ringy, how many .264 WM loads have you worked up?
I've owned .264s since the '70s. current stable consists of four, three on their second barrels and one on it's third.
Krieger barrel
lilja barreled Laredo on the left
lilja barrel top, brux barrel lower.
some of my .264 brass.
my statement that 140s @ 3400 from a .264 Win. is kind of a red flag stands.