How common are rifles chambered in .338 Lapua becoming? I'm looking to get a second TRG, this time a 42 in .338 Lapua and am hemming and hawing between a .300 Win or a .338 Lapua. I handload pretty much all my own ammo but wonder about being able to go into any gunshop and finding .338 ammo. I know in a pinch I could get some .300 ammo just about anywhere but I wonder if there are enough target shooters and or hunters using the larger caliber to expect the same availability? Most likely if I buy a .338 Lapua I would just buy 500 brass right at the start but it's nice to know that if needed I could get factory ammo somewhere. Does anyone know how popular the .338 Lapua really is?