Originally Posted by terjeness
Thanks to both Sambo and Backwoods!
As I'm looking at Hodgedon's data, it startes (for the .338-.378Weatherby) with 108gr and goes up to 115gr. However, I am considering starting with 105gr and work my way up from there.....
I would NOT do that!!!!!!!!
The 338-378 KT mirrors the performance of the 338 RUM and that would be an over max charge of any powder in the RUM. The KT was based on the 378Wby (back before there was a 338-378 Wby) and the whole case, shoulder and all was shortened 1/4". If you line up a 338-378 KT case next to a 338-378 Wby case, you would see this.
I'll dig around this evening to find the magazine with the load data.