338-06. I have a JES rebored 9.3x62. Looking at doing a 338-0) just for giggles. Tho I have looked long and hard at the 400 Whelen. But die availability and $$& is why I’m looking at 338-06. YMMV
Piece of cake man.
Quality cartridge has 400 Whelen brass in stock
4D has the 'Petrov' reamer for rent, 50 bucks, send that to JES and see if he can bore for .410.411" bullets.
CH4D may have 400 Whelen dies in stock.
OP, go 400 Whelen, or if you want to kick some tail out to 400 yards, the 35 Whelen will boot 250gr Partitions 2700 fps.
