Well now I got thinking... First of all, I usually have just one load for one rifle, this is a new situation somehow so please bear with me if the answer is all too obvious for you more experienced people. I have a large chamber in my 338 LM. One load with 300 SMK:s gives me brass that is very easy to resize. Another 225 SST load is a hotter one and the cases expand a tad more, easy to feel the difference when FL sizing, which I´ve been doing until now. Now,should I keep the brass for each load separate? I just partially sized a bunch of brass for SST:s for a snug chamber fit (and to minimize brass work) and realised that if I load 300 SMK:s with this brass my load won´t be the same anymore. The 300 SMK load doesn´t actually fully expand the brass to the chamber dimensions, Lapua brass is tough - and the TRG-S chamber is huge, I suppose. Or maybe just K.I.S.S. and keep on FL sizing it all for simplicity? I´ve been miking stuff like crazy all day, can´t decide. I may get the answer today though, going to see how the SST load works now ,it must have changed as well because of the change in sizing process. There´s no telling of the uniformity of this chamber either, not with my tools so all I can do is go shooting and hope to see some changes. Thanks!