I doubt you handled this one as it came from Winnepeg(NIB).
Yes it is in 264WinMag.
As far as the muzzle down thing I think its just a preference thing,and as long as they are not standing on concrete they should be fine.I've had no issues.
Mine are standing on a piece of channeled cedar with multiple layers of felt and usually several rags to sop up oil.
Signguy, there is a Savage(heavy) in there aswell mixed with afew Wins and even a Sako (not mine).Thought it was time to put a bolt action Rem in there and mix it up a little more.
There is also a M-70 featherweight NIB going in there tonight aswell.(I phoned home and the wife said she had picked up a parcel that was bigger than the scope I was expecting)
I'll have to move afew out into the "second drawer" cabinet and make some more room.
Sorry, no prizes but,some brilliant deductions by the people who guessed correctly!