The down side is that it is a rebated rim cartridge, which “can” provide some feed and function problems, but most good quality bolt actions don’t have a problem. The other problem is the limited availability of brass (that doesn’t need to be re necked from something else) and loa...
The Lapua brass I think is a big part of why the load development for the 338 was so easy. I still haven’t found a 300 Norma load that has SD’s below 8 fps. I blame that on the brass. Norma brass is good, and I’ve used a ton of it in my 7mm Rem Mag and 6XC. I’...