The Ackley version helps a bit. The secret of the 375 and 400 Whalen is overall ctg. length and careful reloading. Load so the bullet just touches the lands...They are both great smaller case capacity mediun/big bores for a maticulous reloader. The nice part about these calibers is that you can get 5 down in most standard actions and use them in standard length actions...easy conversions for the guys who like to screw around with somewhat unusual breeds of "cats".