Re: 300 ultra mag ammo???
Can't say for sure, but there seems to be a lack of QC in Rem products lately. I bought a used Sendero 300 Rum a couple of years ago with a box of Power III 180 Sciroccos and they shot .5 MOA or better, I've got some new 300 RUM brass here in front of me and it's the cheapest looking brass I have ever seen, and I'm starting a thread on it.
From where I'm sitting, it looks like Rem is cutting a lot of corners.... rifles, brass, whatever...