My son has one in 243, it's in my safe as they are moving, so his guns are stored here. He had a Leupold VX-5 that he wanted mounted, so I did and I shot it 2 weeks ago.
I LOVE the 243 for deer here. I have an older SAKO 243 so comparing them is easy.
I had zero issues with feeding, extract, eject, etc. It's a really nice gun, too nice for me to drag through the woods! Ultimately my guns are for hunting.
I bought factory Remington core locked 100 gr do this rifle. Since I hand load and he doesn't and he's not living here, I wanted to make it easier for him to be able to go to a sporting goods store and buy ammo if he needed it.
Took me a grand total of 5 shots to zero the rifle, after bore sighting, I shot it at 50 yds, made one adjustment and ran her out to 100, 3 shots touching 2 1/2 high at 100. took a picture and sent it to him, cleaned the rifle and back in the safe.
Overall, I'm very impressed (I own 6 older SAKOs). It is lighter than the older AII and L579. I like the wood a lot better on the 90 (Just my preference) Beautiful gun, handles nicely,
BUT the scope mounting system: The front and rear dovetails are the same, not like the older models. I went through 4 mounts before I got the right one. Why SAKO would change a proven design, I have no idea. I am not a fan of the Optilocks. I'll leave it at that.
Only drawbacks to me are : Way too fancy for me, and the price: Last I looked they were asking around $2500 plus he has a VX-5 on his so another 1000 - 1500.
And the Optilock system.