Re: Southwest ammo and SAKO TRG 22 .260 rem
The TRG-22/.260 is not finicky about bullets. I have had great results with 139 Scenars, 142 SMKs and 140 Bergers. I haven't tried the 140 A-Max yet, but I suspect they would work fine too.
In my personal opinion, the Scenars are just a tiny bit more consistant than the others I have tested and that is what I have settled on.