Re: 338-8mm Remington Mag
That sounds about right look at a 340 Weatherby pretty much the same thing the case is the same the 8mm and the 340 are a necked down 375 H&H case. He might have a fast barrel. I shoot as fast as 7mm Ultra mags with my 7MM STW and it is just a plain Rem Sendero and they shoot about 20 grains more of powder than I do.
Fast, Flat, and Accurate