This is my opinion but do not buy the Savage ML ll or the ML l for that fact and here is why i say that.
I built one of the smokless muzzloaders earlier this year but mine is not off of the Savage ML action it is a regular Savage bolt action off of a model 11. I ordered a pac nor barrel for it and then put it in a Choate sniper stock. It takes a special breach plug that is made by a guy named Pete.
My friend and neighbor has one (got it after seeing mine) that was built on the Savage ML ll action (got it second hand). He has had it for about 5 months and is now building one like i have. Why you ask. Well its all about the ignition system. The smokless muzzleloaders use fast burning powder and since you are burning rifle powder what better to ignite it than a rifle primer and not a shotgun primer. How much quality control is really in a shotgun primer? I know i would rather have a match rifle primer that i know is going to be consistant igniting the rifle powder.
That being said his gun does shoot pretty good. Not quite as good as mine but pretty good none the less.
Lets look at cost
My set up
Savage Action $250
Pac Nor Barrel $415
Choate Stock $175
Petes breach plug $95
Total cost $935
Cost of his set up when first built
Savage ML ll $600
Pac nor barrel $415
pillar bed stock and add third pillar and bolt lock $200
Total cost $1215
Cost of new gun
Savage ML ll $600-700
in my mind you cant go wrong with buying the components and putting it together.
These are .45 caliber Muzzleloaders which are better in my opinion than the 50
I am shooting th 200g SST at almost 2800fps with a ES of 13fps and have hit targets out as far as 540 yards with it please show me another muzzleloader for under $1000 that can do that.
If you would like any more info about my set up please let me know i will leave you with a pic of mine and a group shot at 300 yards.