I should have added this to my original reply...
The 10ML II is the only muzzleloading firearm made that is 100% proof tested and for which the maker will tell you what steel is used. You know what kind is pressure it can take. With every other maker you are guessing since they won't share what pressure testing data (if any) they have. Some, CVA, Traditions etc use soft extruded steel barrels (or used to-I do not keep up with their procedures)
It is the only rifle that has been pressure tested for three Triple-7 or three Pyrodex 50 grain pellets. Why is this important? Every reloading manual on earth cautions reloaders to use the most current data and recommendations from component manufacturers. If a centerfire rifle maker advised you to exceed the powder maker's recommendation for powder in a particular cartridge by 50% they would get overwhelmed by a well deserved fire storm of lawsuits. Every other manufacturer will tell you that you can use a 50 grain equivalent of pellets.
Note that Hodgdon, who makes both 777 and P-dex has an entire webpage devoted to related load safety data and clearly states that the maximum allowable pellet charge in a .50 rifle is 100 grain equivalent in pellets. See:
http://www.hodgdon.com/ml-warning.htmlI don't know who you would choose to trust in this matter but I'll take my ques from Hodgdon, thank you very much...
The Savage has, by far, the lowest life cycle cost in muzzleloading. Since it does not need to be cleaned after every outing or swabbed after every shot you will save a bundle of time and money by reducing your maintenance to a tiny fraction of what it was before.
Even with Blackhorn 209, which is the current "gold standard" in loose powder you will have more maintenance to do than with smokeless powder.
Powder costs are a fraction of black powder, Pyrodex, 777, Blackhorn etc.
I use 44 grains of Accurate 5744 behind a 300 grain bullet. I get 159 shots from a one pound can (assuming no waste) and at current MidwayUSA prices ($25) it costs me about $0.16 a shot.
Triple-7 loose powder costs $24.59 and likely needs 100-110 grains to get to the same velocity. At 100 grains the cost per shot is $0.36
Triple-7 50 grain equivalent pellets cost $28.49/100 or $40 a pound equivalent. Since I would get 50 shots from the box my cost is $0.57 per shot.
Other powder choices follow the same trends.
I hope all this helps you in making your decision.
Lance