Easy for me !
300 ultra mag, no problem with light loads and Moose would definitely not like a 230 gr . Berger .
You said you would be loading for him !!
# 2 is easy ! I smacked a milk jug at a mile ( 1760 yards ! ) with the 230 gr bergers !
Now I would jump on a Vortex pst 4 x 16 or a 6 x 24 they pop up all the time on here . Same with brass and dies ...my Wife and I have put most of the 43+ critters on the wall with the 300 Rum !
You can load 150 gr up to a 230 gr. bullet for any choice of Game intended.
Just my 2 cents !
Rum Man
I'm for thinking that #5 kind of takes the 300 Ultra Gag out of the game...
5) I'll load for him, perhaps indefinitely, but reasonably common factory ammo is a must