IMO,
You'll need a flat-shooting tack-driver. I agree w/ some of the above comments...make sure you can get to the ram before you pull the trigger. Sheep aren't as tough to kill, it's true, as say elk or good God AK-Yuk moose, but the country can be treacherous when retrieving, so make sure you can get to a downed animal. As for my rams, fortunately one shot and straight down-
RMBS OR Hell's Canyon Oct 2009 Haas Ridge/Lightning Creek 425 yds broadside standing up Lazzeroni 7.21 Firehawk 140gr Nosler. Rain/Sleet. prone w Harris bipod.
Dall's Yukon Aug 2012 Sheep Mtn/Tatonduk Rvr 180 yds broadside feeding same rifle as above. Blue skies. backpack rest.
Stone's Yukon Aug 2013 Ogilvie Mtns/Mount King 335 yds broadside feeding 7mm LRM Gunwerks Berger 180gr VLD. Rain/sleet. prone/backpack rest.
Stone's Northern BC Early Sept 2014 Gathto Creek 305 yds broadside feeding same rifle as above. Blue skies. prone w bipod.
Stone's Yukon Coal/Eagle Creek Ogilvie Mtns Aug 2015 waited to have him stand up out of bed w/ me standing offhand at maybe 60-70 yds. Borden Rimrock .300 WSM. 180gr Barnes TTX. Blue skies.
Stone's Yukon Skookum Jim Mtn Sept 2016 w ram shot lying in bed broadside. prone/backpack rest uphill 275 yds. Sleet/snow /rain. Same Borden .300 WSM
Pick your shots, make sure the other rams are neither in front or behind, for a clean kill one shot, make sure you can retrieve the animal...time of day, weather, or approaching weather, etc.
Best of Luck and train like a madman. BTW, IMO the Lazz and the Gunwerks, even the "Mountain-X" that I have, are tack drivers but way too heavy. The Borden Rimrock is a lightweight tack-driver that is a pleasure to pack on a mountain hunt.
DWD