Originally Posted by mathman
have you noted a difference moving from a 300 to a 338 mag with a 250 Partition?


Only seen the 210,225 338 Partitions used from 338 and 340 but "no" never saw much difference between them and a 180-200 gr from a 300 magnum.

IMO the next "step up" above a 300 is a 375 bore size.




The 280 Remington is overbore.

The 7 Rem Mag is over bore.