Getting ready for moose hunting and I'm in a bit of a situation.

I shoot a Ruger M77 MarkII (7mm Rem Mag) and have been using Remington Premiere Safari Grade shells with the Swift A Frame bullet at 160gr. I love this shell. My rifle is dialed in with this shell.

Unfortunatly I am having a terrible time getting any more of these shells. It seems that most dealers around my region only stock the standard Remington loads. The only shop that sells them is out until mid October. I leave for moose hunting October 10th........

So, I guess my question is what is a comprable shell?

Anyone have any experience with the Federal Premium line?

Also, Nickle plated casings are prefered (I hate corrosion on my shells)

Well that seems long winded enough!
Thanks.