Whenever "accuracy" is mentioned, people seem to get a bit rattled. There is "accuracy," and there is "hunting accuracy"-- with later far more subjective.
All depends who you talk to. With two piece stocks, there just isn't a lot of bedding that can be done-- yet, I've found the Encore and now the Contender G2 to be two of the more accurate muzzleloaders I've tested.
Huntsman, Optima, and now Rossi / Traditions break open actions (as well as the Denali) are basically shotgun actions, and no great accuracy can really be expected. A look at the lockup and resultant rigidity compared to a Citori action, for example, makes it fairly clear. Some gunsmiths have referred to break-opens as the lowest form of rifle design.
The company I mentioned is Knight Rifles-- still, single recoil lug rifles, so not much std. bedding is easy, nor recommended. Though they never have bothered with dual recoil lug guns, they still have managed to win the NMRLA Manufacturer's Championship 4 years straight. You'll also find a few gunsmiths who feel bedding an action is effectively equal to pillar work, if not superior.
So, I don't know. I'm certainly interested in your before / after skim bedding comparisons with your Savage groups.