Sweetie,
Both have MULTIPLE variations and I can only attest,to them which I've shot through my rifles(multiple) and chronographs(multiple) and erectors(multiple). Hint.
Perhaps the 200's also now have a greater muzzle velocity,than the 155's? Hint. Fhuqking LAUGHING!
Pardon my simply shooting it all and then some. Hint.
Fhuqking LAUGHING!............