I’ve shot 150 grain (if memory serves me correctly) Swift Scirocco II bullets that were loaded in factory ammo by Remington from my Sako 85 Finnlight in 7mm Rem Mag. I purchased the rifle right before a Utah Mule Deer hunt and had little time to work up loads for it so I went with factory fodder. I ended up getting acceptable accuracy (slightly under MOA) with them at the range out to 300 yds. I took a nice mule deer at a shade over 400 yds and at an almost straight down hill angle / quartering away with that rifle. Performance was very good and what you would expect/hope from a premium bullet. The deer, which scored right at 180 inches (green score), was built like a tank. I swear that thing weighed 300 lbs on the hoof although we didn’t officially weigh him. The bullet did it’s job well.
Having said that, as some have alluded to above and elsewhere, the Scirocco bullets have a reputation for being a little finicky. Some rifles can lay them in one ragged hole all day long, and some rifles you have to work hard to find a powder and primer combo to get acceptable accuracy. I admittedly don’t shoot that rifle much but if I ever decide to shoot it again, I’ll stick with the 160 grain Nosler Accubonds. In my Sako, Accubonds are extremely accurate. I’ve got a fair amount of experience with 140 grain Accubonds and Ballistic Tips in my 280 Ackley Improved and have taken a couple of sheep with each (Dall - BT and Stone - AB) at distance. The performance of these bullets has been stellar. All things being equal, I’ve switched to the Accubonds simply because they are a tougher bullet for animals like goats, etc.
I think you’d be well served, as far as terminal performance, with either bullet (Scirocco IIs or Accubonds). My vote would be for the one who gives you best accuracy and velocity.