I shoot a 338 Lapua, Rich, (in a Sako TRG-S) and it's not all what the magazine articles make it out to be. I can't safely get 3000 fps with 250 gr bullets from a 26" barrel, something the 338-378 will do with ease. The Lapua brass is no cheaper them Wby, nor are the dies etc. Don't get me wrong, I like the rifle, (except for the stock, what a piece of crap), but I really expected more from the press build up. You can equal what the Lapua does with the 338-300 RUM, usually at a much smaller investment in rifles. I'm rebarreling mine to a switch barrel, with 30" tubes in 338 Lapua and the two big case Wby cals (30 and 33), just to do some comparisons, then we'll really have some data to play with. FWIW - dan