Re: Building McWhorter Custom
I reload and shoot the 7mm Weatherby. The STW has a bit more powder and therefore power, but I wouldn't call it a huge difference. Others may have differing opinions.
I think the STW is a neat round, probably the most powerful factory 7mm, but there does seem to be difficulty in finding brass especially good quality brass. The nice thing about the 7mm Weatherby is that there is always brass available if you want to reload, and many factory loads as well. In addition, Weatherby brass is generally very high quality.
So, I do have a bit of a bias but the 7mm Weatherby has worked well for us on deer and elk over the past several years.