Norma actually makes some brass for Lapua. Both are top quality. Peterson cartridge make some top quality match grade 300 WM brass to. Made in PA. I use it in 284 Win and getting .1" groups. Neck thickness varied less than .0005Looking for some new brass for my .300 Win Mag - I am newer to reloading and do not have any experience with either of these.
I know Lapua is starting to produce some .300 Win Mag brass at "some point in Q2". So who knows when that will be and even with that, when you will be able to find it.
Question is, is it worth waiting to try and get some Lapua or should I go with some Norma brass which is in stock locally? Is there really much performance difference in the two?