I have most of the popular reloading manuals published since WWII, and I can't find any that advertise much over 3450fps with 130's in the 270Wby, and those manuals tend to be, ah, optimistic with most rifles.............The majority of the manuals list the 130's around 3300fps max.
The best pressure barrel the average guy has is his chronograph. If he's running over max listed velocities, odds are good he's over max pressure.
Most load data for the 270 Wby is grossly watered down. They don't even actually test it. The numbers are computer generated.
To say there's no real world difference between a 270 Win and a 270 Wby is laughable. I've own/owned and loaded for all 3. The Wby simply stomps the WCF. The WSM comes much closer, but if you want the king of .277's, the Weatherby is it.
