Plenty, how many rounds total do you have through the rifle? Is it new?
Is the scope new as well or "proven" on another rifle?
I assume you had the same results with the Fusions and Partitions?
If I'm reading this right, your 200 yard groups are about 10-11 inches(!)Is that correct?
Thoughts:
Pretty light rifle;potent round.It will be sensitive to how it's set up in the bags.Get the front bag back under the front screw of the receiver.Also try putting something soft like a piece of towel between the sand bags and the rifle.This may help attenuate some of the "bounce" from a very light rifle off firm bags.
It will also be sensitive to how you hold it;if you think you are being consistent, try harder.I have a 257 Roberts that is very accurate, but it is light weight,fully bedded barrel; if I get sloppy with my hold, it will throw a flier. It wants to be held firmly and consistently.
Is the barrel properly floated,all the way around;could the barrel be tapping the forend during recoil?Along the sides,etc?Seems like the barrel is stringing horizontal and down.
Barrel heat....are you letting it cool every three shots, or hurrying through the 5 shot string?
Barrel is "new".Yesterday, a friend told of a Kimber in 257 Roberts that grouped about 4" at 100 yards until it had a few rounds through it;then it settled in with Hornady ammo and shot tight groups.He also noticed the dirtier it got, the better it shot....not uncommon with some factory barrels.
Are you cleaning it excessively?
Obvious stuff,like bedding.All screws properly tightened? Scope rings, etc?
The fact it is doing the same things more or less consistently makes me think it is not the scope;a busted scope would be prone to be more random I think.
Keep shooting it;keeping this stuff in mind. It may turn a corner.Others will chime in I'm sure.